Document:

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                                                                   Exhibit 10.64

                              WARRANT TO PURCHASE
                             SHARES OF COMMON STOCK

                       Exercisable Commencing May 9, 2003;
                             Void after May 9, 2008.

         THIS CERTIFIES that, for value received, Barbell Group, Inc., a
Panamanian corporation, or its registered assigns ("Warrantholder"), is
entitled, subject to the terms and conditions set forth in this Warrant, to
purchase from Invisa, Inc., a Nevada corporation ("Company"), up to seventy-five
thousand (75,000) fully paid, duly authorized and nonassessable shares of common
stock ("Shares"), $.001 par value per share, of the Company ("Common Stock"), at
any time commencing on May 9, 2003 and continuing up to 5:00 p.m. Pacific Time
on May 9,, 2008 ("Exercise Period") at an exercise price equal to two dollars
and seventy-six cents ($2.76) per share, subject to adjustment pursuant to
Section 8 hereof, and provided that warrants to purchase (i) twenty-five
thousand (25,000) Shares shall be vested and exercisable upon the issuance of
these Warrants, (ii) twenty-five thousand (25,000) Shares shall be exercisable
on the date that, and only if, the Company has received $500,000 in aggregate
financing under a certain Investment Agreement dated as of May 9, 2003
("Investment Agreement"), and (iii) twenty-five thousand (25,000) Shares shall
be vested and exercisable on the date that, and only if, the Company has
received $1,000,000 in aggregate financing under the Investment Agreement.

         This Warrant is subject to the following provisions, terms and
conditions:

         SECTION 1. TRANSFERABILITY.

         1.1 REGISTRATION. The Warrants shall be issued only in registered form.

         1.2 TRANSFER. This Warrant shall be transferable only on the books of
the Company maintained at its principal executive offices upon surrender thereof
for registration of transfer duly endorsed by the Warrantholder or by its duly
authorized attorney or representative, or accompanied by proper evidence of
succession, assignment or authority to transfer. Upon any registration of
transfer, the Company shall execute and deliver a new Warrant or Warrants in
appropriate denominations to the person or persons entitled thereto.

         1.3 COMMON STOCK TO BE ISSUED. Upon the exercise of any vested Warrants
and upon receipt by the Company of a facsimile or original of Warrantholder's
signed Election to Exercise Warrant (See Exhibit 1), Company shall instruct its
transfer agent to issue stock certificates, subject to the restrictive legend
set forth below, in the name of Warrantholder (or its nominee) and in such
denominations to be specified by Warrantholder representing the number of shares
of Common Stock issuable upon such exercise, as applicable. Company warrants
that no instructions, other than these instructions, have been given or will be
given to the transfer agent and that the Common Stock shall otherwise be freely
transferable on the books and records of the Company. It shall be the Company's
responsibility to take all necessary actions and to bear all such costs to issue
the certificates of Common Stock as provided herein, including the
responsibility and cost for delivery of an opinion letter to the transfer agent,
if so required. The person in whose name the

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certificates of Common Stock is to be registered shall be treated as a
shareholder of record on and after the exercise date. Upon surrender of any
Warrant that is to be converted in part, the Company shall issue to the
Warrantholder a new Warrant equal to the unconverted amount, if so requested by
Purchaser:

         THE SECURITIES OFFERED HEREBY HAVE NOT BEEN AND WILL NOT BE REGISTERED
         UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, AND THE
         RULES AND REGULATIONS PROMULGATED THEREUNDER (THE "1933 ACT"), AND MAY
         NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO REGISTRATION UNDER OR AN
         EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE 1933 ACT.

         SECTION 2. EXCHANGE OF WARRANT CERTIFICATE. Any Warrant certificate may
be exchanged for another certificate or certificates of like tenor entitling the
Warrantholder to purchase a like aggregate number of Shares as the certificate
or certificates surrendered then entitle such Warrantholder to purchase. Any
Warrantholder desiring to exchange a warrant certificate shall make such request
in writing delivered to the Company, and shall surrender, properly endorsed, the
certificate evidencing the Warrant to be so exchanged. Thereupon, the Company
shall execute and deliver to the person entitled thereto a new Warrant
certificate as so requested.

         SECTION 3. TERMS OF WARRANTS: EXERCISE OF WARRANTS.

         (a) Subject to the terms of this Warrant, the Warrantholder shall have
the right, at any time commencing on May 9, 2003, but before 5:00 p.m. Pacific
Time on May 9, 2008 ("Expiration Time"), to purchase from the Company up to the
number of Shares which the Warrantholder may at the time be entitled to purchase
pursuant to the terms of this Warrant, upon surrender to the Company at its
principal executive office, of the certificate evidencing this Warrant to be
exercised, together with the attached Election to Exercise Warrant form duly
filled in and signed, and upon payment to the Company of the Warrant Price (as
defined in and determined in accordance with the provisions of Section 7 and 8
hereof) or as provided in Section 3(a)(i) hereof, for the number of Shares with
respect to which such Warrant is then exercised. Payment of the aggregate
Warrant Price shall be made in cash, wire transfer or by cashier's check or any
combination thereof.

         (b) Subject to the terms of this Warrant, upon such surrender of this
Warrant and payment of such Warrant Price as aforesaid, the Company shall
promptly issue and cause to be delivered to the Warrantholder or to such person
or persons as the Warrantholder may designate in writing, a certificate or
certificates (in such name or names as the Warrantholder may designate in
writing) for the number of duly authorized, fully paid and non-assessable whole
Shares to be purchased upon the exercise of this Warrant, and shall deliver to
the Warrantholder Common Stock or cash, to the extent provided in Section 9
hereof, with respect to any fractional Shares otherwise issuable upon such
surrender. Such certificate or certificates shall be deemed to have been issued
and any person so designated to be named therein shall be deemed to have become
a holder of such Shares as of the close of business on the date of the surrender
of this Warrant and payment of the Warrant Price, notwithstanding that the
certificates representing

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such Shares shall not actually have been delivered or that the Share and Warrant
transfer books of the Company shall then be closed. This Warrant shall be
exercisable, at the sole election of the Warrantholder, either in full or from
time to time in part and, in the event that any certificate evidencing this
Warrant (or any portion thereof) is exercised prior to the Expiration Time with
respect to less than all of the Shares specified therein at any time prior to
the Expiration Time, a new certificate of like tenor evidencing the remaining
portion of this Warrant shall be issued by the Company, if so requested by the
Warrantholder.

         (c) Upon the Company's receipt of a facsimile or original of
Warrantholder's signed Election to Exercise Warrant, the Company shall instruct
its transfer agent to issue one or more stock certificates representing that
number of shares of Common Stock which the Warrantholder is entitled to purchase
in accordance with the terms and conditions of this Warrant and the Election to
Exercise Warrant attached hereto. The Company shall act as Registrar and shall
maintain an appropriate ledger containing the necessary information with respect
to each Warrant and it shall not be necessary for the Warrantholder to send to
the Company the original Warrants to be exercised.

         (d) Such exercise shall be effectuated by sending to the Company, or
its attorney, a facsimile or original of the signed Election to Exercise Warrant
which evidences Warrantholder's intention to exercise those Warrants indicated.
The date on which the Election to Exercise Warrant is effective ("Exercise
Date") shall be deemed to be the date on which the Warrantholder has delivered
to the Company a facsimile or original of the signed Election to Exercise
Warrant. The Company shall deliver to the Warrantholder, or per the
Warrantholder's instructions, the shares of Common Stock within three (3)
business days of receipt of the Election to Exercise Warrants.

         (e) Nothing contained in this Warrant shall be deemed to establish or
require the payment of interest to the Warrantholder at a rate in excess of the
maximum rate permitted by governing law. In the event that the rate of interest
required to be paid exceeds the maximum rate permitted by governing law, the
rate of interest required to be paid thereunder shall be automatically reduced
to the maximum rate permitted under the governing law and such excess shall be
returned with reasonable promptness by the Warrantholder to the Company.

         (f) It shall be the Company's responsibility to take all necessary
actions and to bear all such costs to issue the certificate of Common Stock as
provided herein, including the responsibility and cost for delivery of an
opinion letter to the transfer agent, if so required. The person in whose name
the certificate of Common Stock is to be registered shall be treated as a
shareholder of record on and after the exercise date. Upon surrender of any
Warrants that are to be converted in part, the Company shall issue to the
Warrantholder new Warrants equal to the unconverted amount, if so requested by
Warrantholder.

         (g) The Company shall at all times reserve and have available all
Common Stock necessary to meet exercise of the Warrants by all Warrantholders of
the entire amount of Warrants then outstanding. If, at any time Warrantholder
submits an Election to Exercise Warrant and the Company does not have sufficient
authorized but unissued shares of Common Stock available to effect, in full, a
exercise of the Warrants (a "Exercise Default", the date of such default being
referred to herein as the "Exercise Default Date"), the Company shall issue to

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the Warrantholder all of the shares of Common Stock which are available, and the
Election to Exercise Warrant as to any Warrants requested to be converted but
not converted (the "Unconverted Warrants"), upon Warrantholder's sole option,
may be deemed null and void. The Company shall provide notice of such Exercise
Default ("Notice of Exercise Default") to all existing Warrantholders of
outstanding Warrants, by facsimile, within one (1) business day of such default
(with the original delivered by overnight or two day courier), and the
Warrantholder shall give notice to the Company by facsimile within five (5)
business days of receipt of the original Notice of Exercise Default (with the
original delivered by overnight or two day courier) of its election to either
nullify or confirm the Election to Exercise Warrant.

         (h) Each person in whose name any certificate for shares of Common
Stock shall be issued shall for all purposes be deemed to have become the holder
of record of the Common Stock represented thereby on the date on which the
Warrant was surrendered and payment of the purchase price and any applicable
taxes was made, irrespective of date of issue or delivery of such certificate,
except that if the date of such surrender and payment is a date when the Shares
transfer books of the Company are closed, such person shall be deemed to have
become the holder of such Shares on the next succeeding date on which such Share
transfer books are open. The Company shall not close such Share transfer books
at any one time for a period longer than seven (7) days.

         (i) This Warrant is exercisable in whole or in part at the Exercise
Price per share of Common Stock (as defined hereafter) payable hereunder,
payable in cash or by certified or official bank check, by means of sending to
the Company, or its attorney, an Election to Exercise Warrants, as stated above,
to receive the number of shares of Common Stock stated in such Election or by
"cashless exercise" (only in the event the Shares underlying the Warrants have
not been registered in an effective Registration Statement), by means of sending
to the Company, or its attorney, an Election to Exercise Warrants, as stated
above, to receive a number of shares of Common Stock equal to the difference
between the Market Value (as defined hereafter) of the shares of Common Stock
issuable upon exercise of this Warrant and the total cash exercise price
thereof. Upon transmitting the annexed Notice of Exercise duly executed,
together with payment of the Exercise Price for the shares of Common Stock
purchased, or upon the "cashless exercise" as provided in this Section, the
Holder shall be entitled to receive a certificate or certificates for the shares
of Common Stock so purchased. For the purposes of this subsection, "Market
Value" shall be an amount equal to the average closing bid price of a share of
Common Stock for the ten (10) days preceding the Company's receipt of the Notice
of Exercise Form duly executed multiplied by the number of shares of Common
Stock to be issued upon surrender of this Warrant Certificate.

         SECTION 4. PAYMENT OF TAXES. The Company shall pay all documentary
stamp taxes, if any, attributable to the initial issuance of the Shares;
provided, however, that the Company shall not be required to pay any tax or
taxes which may be payable, (i) with respect to any secondary transfer of this
Warrant or the Shares or (ii) as a result of the issuance of the Shares to any
person other than the Warrantholder, and the Company shall not be required to
issue or deliver any certificate for any Shares unless and until the person
requesting the issuance thereof shall have paid to the Company the amount of
such tax or shall have produced evidence that such tax has been paid to the
appropriate taxing authority.

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         SECTION 5. MUTILATED OR MISSING WARRANT. In case the certificate or
certificates evidencing this Warrant shall be mutilated, lost, stolen or
destroyed, the Company shall, at the request of the Warrantholder, issue and
deliver in exchange and substitution for and upon cancellation of the mutilated
certificate or certificates, or in lieu of and substitution for the certificate
or certificates lost, stolen or destroyed, a new Warrant certificate or
certificates of like tenor and representing an equivalent right or interest, but
only upon receipt of evidence satisfactory to the Company of such loss, theft or
destruction of such Warrant and of a bond of indemnity, if requested, also
satisfactory to the Company in form and amount, and issued at the applicant's
cost. Applicants for such substitute Warrant certificate shall also comply with
such other reasonable regulations and pay such other reasonable charges as the
Company may prescribe.

         SECTION 6. RESERVATION OF SHARES. The issuance, sale and delivery of
the Warrants have been duly authorized by all required corporate action on the
part of the Company and when issued, sold and delivered in accordance with the
terms hereof and thereof for the consideration expressed herein and therein,
will be duly and validly issued, fully paid, and non-assessable and enforceable
in accordance with their terms, subject to the laws of bankruptcy and creditors'
rights generally. The Company shall pay all taxes in respect of the issue
thereof. As a condition precedent to the taking of any action that would result
in the effective purchase price per share of Common Stock upon the exercise of
this Warrant being less than the par value per share (if such shares of Common
Stock then have a par value), the Company will take such corporate action as
may, in the opinion of its counsel, be necessary in order that the Company may
comply with all its obligations under this Agreement with regard to the exercise
of this Warrant.

         SECTION 7. WARRANT PRICE. During the Exercise Period, the price per
Share ("Warrant Price") at which Shares shall be purchasable upon the exercise
of this Warrant shall be two dollars and seventy-six cents ($2.76).

         SECTION 8. ADJUSTMENT OF WARRANT PRICE AND NUMBER OF SHARES. The number
and kind of securities purchasable upon the exercise of this Warrant and the
Warrant Price shall be subject to adjustment from time to time after the date
hereof upon the happening of certain events, as follows:

         8.1 ADJUSTMENTS. The number of Shares purchasable upon the exercise of
this Warrant shall be subject to adjustments as follows:

         (a) In case the Company shall (i) pay a dividend on Common Stock in
Common Stock or securities convertible into, exchangeable for or otherwise
entitling a holder thereof to receive Common Stock, (ii) declare a dividend
payable in cash on its Common Stock and at substantially the same time offer its
shareholders a right to purchase new Common Stock (or securities convertible
into, exchangeable for or other entitling a holder thereof to receive Common
Stock) from the proceeds of such dividend (all Common Stock so issued shall be
deemed to have been issued as a stock dividend), (iii) subdivide its outstanding
shares of Common Stock into a greater number of shares of Common Stock, (iv)
combine its outstanding shares of Common Stock into a smaller number of shares
of Common Stock, or (v) issue by

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reclassification of its Common Stock any shares of Common Stock of the Company,
the number of shares of Common Stock issuable upon exercise of the Warrants
immediately prior thereto shall be adjusted so that the holders of the Warrants
shall be entitled to receive after the happening of any of the events described
above that number and kind of shares as the holders would have received had such
Warrants been converted immediately prior to the happening of such event or any
record date with respect thereto. Any adjustment made pursuant to this
subdivision shall become effective immediately after the close of business on
the record date in the case of a stock dividend and shall become effective
immediately after the close of business on the effective date in the case of a
stock split, subdivision, combination or reclassification.

         (b) In case the Company shall distribute, without receiving
consideration therefor, to all holders of its Common Stock evidences of its
indebtedness or assets (excluding cash dividends other than as described in
Section (8)(a)(ii)), then in such case, the number of shares of Common Stock
thereafter issuable upon exercise of the Warrants shall be determined by
multiplying the number of shares of Common Stock theretofore issuable upon
exercise of the Warrants, by a fraction, of which the numerator shall be the
closing bid price per share of Common Stock on the record date for such
distribution, and of which the denominator shall be the closing bid price of the
Common Stock less the then fair value (as determined by the Board of Directors
of the Company, whose determination shall be conclusive) of the portion of the
assets or evidences of indebtedness so distributed per share of Common Stock.
Such adjustment shall be made whenever any such distribution is made and shall
become effective immediately after the record date for the determination of
stockholders entitled to receive such distribution.

         (c) Any adjustment in the number of shares of Common Stock issuable
hereunder otherwise required to be made by this Section 8 will not have to be
adjusted if such adjustment would not require an increase or decrease in one
percent (1%) or more in the number of shares of Common Stock issuable upon
exercise of the Warrant. No adjustment in the number of Shares purchasable upon
exercise of this Warrant will be made for the issuance of shares of capital
stock to directors, employees or independent Warrantors pursuant to the
Company's or any of its subsidiaries' stock option, stock ownership or other
benefit plans or arrangements or trusts related thereto or for issuance of any
shares of Common Stock pursuant to any plan providing for the reinvestment of
dividends or interest payable on securities of the Company and the investment of
additional optional amounts in shares of Common Stock under such plan.

         (d) Whenever the number of shares of Common Stock issuable upon the
exercise of the Warrants is adjusted, as herein provided the Warrant Price shall
be adjusted (to the nearest cent) by multiplying such Warrant Price immediately
prior to such adjustment by a fraction, of which the numerator shall be the
number of shares of Common Stock issuable upon the exercise of each share of the
Warrants immediately prior to such adjustment, and of which the denominator
shall be the number of shares of Common Stock issuable immediately thereafter.

         (e) The Company from time to time by action of its Board of Directors
may decrease the Warrant Price by any amount for any period of time if the
period is at least twenty (20) days, the decrease is irrevocable during the
period and the Board of Directors of the Company in its sole discretion shall
have made a determination that such decrease would be in the best interest of
the Company, which determination shall be conclusive. Whenever the Warrant Price
is

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decreased pursuant to the preceding sentence, the Company shall mail to holders
of record of the Warrants a notice of the decrease at least fifteen (15) days
prior to the date the decreased Warrant Price takes effect, and such notice
shall state the decreased Warrant Price and the period it will be in effect.

         8.2 MERGERS, ETC. In the case of any (i) consolidation or merger of the
Company into any entity (other than a consolidation or merger that does not
result in any reclassification, exercise, exchange or cancellation of
outstanding shares of Common Stock of the Company), (ii) sale, transfer, lease
or conveyance of all or substantially all of the assets of the Company as an
entirety or substantially as an entirety, or (iii) reclassification, capital
reorganization or change of the Common Stock (other than solely a change in par
value, or from par value to no par value), in each case as a result of which
shares of Common Stock shall be converted into the right to receive stock,
securities or other property (including cash or any combination thereof), each
holder of Warrants then outstanding shall have the right thereafter to exercise
such Warrant only into the kind and amount of securities, cash and other
property receivable upon such consolidation, merger, sale, transfer, capital
reorganization or reclassification by a holder of the number of shares of Common
Stock of the Company into which such Warrants would have been converted
immediately prior to such consolidation, merger, sale, transfer, capital
reorganization or reclassification, assuming such holder of Common Stock of the
Company (A) is not an entity with which the Company consolidated or into which
the Company merged or which merged into the Company or to which such sale or
transfer was made, as the case may be ("constituent entity"), or an affiliate of
a constituent entity, and (B) failed to exercise his or her rights of election,
if any, as to the kind or amount of securities, cash and other property
receivable upon such consolidation, merger, sale or transfer (provided that if
the kind or amount of securities, cash and other property receivable upon such
consolidation, merger, sale or transfer is not the same for each share of Common
Stock of the Company held immediately prior to such consolidation, merger, sale
or transfer by other than a constituent entity or an affiliate thereof and in
respect of which such rights or election shall not have been exercised
("non-electing share"), then for the purpose of this Section 8.2 the kind and
amount of securities, cash and other property receivable upon such
consolidation, merger, sale or transfer by each non-electing share shall be
deemed to be the kind and amount so receivable per share by a plurality of the
non-electing shares). If necessary, appropriate adjustment shall be made in the
application of the provision set forth herein with respect to the rights and
interests thereafter of the holder of Warrants, to the end that the provisions
set forth herein shall thereafter correspondingly be made applicable, as nearly
as may reasonably be, in relation to any shares of stock or other securities or
property thereafter deliverable on the exercise of the Warrants. The above
provisions shall similarly apply to successive consolidations, mergers, sales,
transfers, capital reorganizations and reclassifications. The Company shall not
effect any such consolidation, merger, sale or transfer unless prior to or
simultaneously with the consummation thereof the successor company or entity (if
other than the Company) resulting from such consolidation, merger, sale or
transfer assumes, by written instrument, the obligation to deliver to the holder
of Warrants such shares of stock, securities or assets as, in accordance with
the foregoing provision, such holder may be entitled to receive under this
Section 8.2.

         8.3 STATEMENT OF WARRANTS. Irrespective of any adjustments in the
Warrant Price of the number or kind of shares purchasable upon the exercise of
this Warrant, this Warrant

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certificate or certificates hereafter issued may continue to express the same
price and number and kind of shares as are stated in this Warrant.

         SECTION 9. FRACTIONAL SHARES. Any fractional shares of Common Stock
issuable upon exercise of the Warrants shall be rounded to the nearest whole
share or, at the election of the Company, the Company shall pay the holder
thereof an amount in cash equal to the closing bid price thereof. Whether or not
fractional shares are issuable upon exercise shall be determined on the basis of
the total number of Warrants the holder is at the time exercising and the number
of shares of Common Stock issuable upon such exercise.

         SECTION 10. NO RIGHTS AS STOCKHOLDERS: NOTICES TO WARRANTHOLDERS.
Nothing contained in this Warrant shall be construed as conferring upon the
Warrantholder or its transferees any rights as a stockholder of the Company,
including the right to vote, receive dividends, consent or receive notices as a
stockholder with respect to any meeting of stockholders for the election of
directors of the Company or any other matter. If, however, at any time prior to
the Expiration Time and prior to the exercise of this Warrant, any of the
following events shall occur:

         (a) any action which would require an adjustment pursuant to Section
8.1; or

         (b) a dissolution, liquidation or winding up of the Company or any
consolidation, merger or sale of its property, assets and business as an
entirety; then in any one or more of said events, the Company shall give notice
in writing of such event to the Warrantholder at least ten (10) days prior to
the date fixed as a record date or the date of closing the transfer books for
the determination of the shareholders entitled to any relevant dividend,
distribution, subscription rights, or other rights or for the effective date of
any dissolution, liquidation of winding up or any merger, consolidation, or sale
of substantially all assets, but failure to mail or receive such notice or any
defect therein or in the mailing thereof shall not affect the validity of any
such action taken. Such notice shall specify such record date or the effective
date, as the case may be.

         SECTION 11. MISCELLANEOUS.

         (a) BENEFITS OF THIS AGREEMENT. Nothing in this Warrant shall be
construed to give to any person or corporation other than the Company and the
Warrantholder any legal or equitable right, remedy or claim under this Warrant,
and this Warrant shall be for the sole and exclusive benefit of the Company and
the Warrantholder.

         (b) RIGHTS CUMULATIVE; WAIVERS. The rights of each of the parties under
this Warrant are cumulative. The rights of each of the parties hereunder shall
not be capable of being waived or varied other than by an express waiver or
variation in writing. Any failure to exercise or any delay in exercising any of
such rights shall not operate as a waiver or variation of that or any other such
right. Any defective or partial exercise of any of such rights shall not
preclude any other or further exercise of that or any other such right. No act
or course of conduct or negotiation on the part of any party shall in any way
preclude such party from exercising any such right or constitute a suspension or
any variation of any such right.

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         (c) BENEFIT; SUCCESSORS BOUND. This Warrant and the terms, covenants,
conditions, provisions, obligations, undertakings, rights, and benefits hereof,
shall be binding upon, and shall inure to the benefit of, the parties hereto and
their heirs, executors, administrators, representatives, successors, and
permitted assigns.

         (d) ENTIRE AGREEMENT. This Warrant contains the entire agreement
between the parties with respect to the subject matter hereof. There are no
promises, agreements, conditions, undertakings, understandings, warranties,
covenants or representations, oral or written, express or implied, between them
with respect to this Warrant or the matters described in this Warrant, except as
set forth in this Warrant. Any such negotiations, promises, or understandings
shall not be used to interpret or constitute this Warrant.

         (e) ASSIGNMENT. This Warrant may be assigned if the Assignment of
Warrant, attached as Exhibit B to this Warrant, is properly completed, executed
and delivered to the Company.

         (f) AMENDMENT. This Warrant may be amended only by an instrument in
writing executed by the parties hereto.

         (g) SEVERABILITY. Each part of this Warrant is intended to be
severable. In the event that any provision of this Warrant is found by any court
or other authority of competent jurisdiction to be illegal or unenforceable,
such provision shall be severed or modified to the extent necessary to render it
enforceable and as so severed or modified, this Warrant shall continue in full
force and effect.

         (h) NOTICES. Notices required or permitted to be given hereunder shall
be in writing and shall be deemed to be sufficiently given when personally
delivered (by hand, by courier, by telephone line facsimile transmission,
receipt confirmed, or other means) or sent by certified mail, return receipt
requested, properly addressed and with proper postage pre-paid (i) if to the
Company, at its executive office (ii) if to the Subscriber, at the address set
forth under its name in the Purchase Agreement, with a copy to its designated
attorney and (iii) if to any other Subscriber, at such address as such
Subscriber shall have provided in writing to the Company, or at such other
address as each such party furnishes by notice given in accordance with this
Section 12(h), and shall be effective, when personally delivered, upon receipt
and, when so sent by certified mail, four (4) business days after deposit with
the United States Postal Service.

         (i) GOVERNING LAW. This Agreement shall be governed by the interpreted
in accordance with the laws of the State of New York without reference to its
conflicts of laws rules or principles. Each of the parties consents to the
exclusive jurisdiction of the federal courts of the State of New York in
connection with any dispute arising under this Agreement and hereby waives, to
the maximum extent permitted by law, any objection, including any objection
based on forum non coveniens, to the bringing of any such proceeding in such
jurisdictions.

         (j) CONSENTS. The person signing this Warrant on behalf of the Company
hereby represents and warrants that he has the necessary power, consent and
authority to execute and deliver this Warrant on behalf of the Company.

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         (l) FURTHER ASSURANCES. In addition to the instruments and documents to
be made, executed and delivered pursuant to this Warrant, the parties hereto
agree to make, execute and deliver or cause to be made, executed and delivered,
to the requesting party such other instruments and to take such other actions as
the requesting party may reasonably require to carry out the terms of this
Warrant and the transactions contemplated hereby.

         (m) SECTION HEADINGS. The Section headings in this Warrant are for
reference purposes only and shall not affect in any way the meaning or
interpretation of this Warrant.

         (n) CONSTRUCTION. Unless the context otherwise requires, when used
herein, the singular shall be deemed to include the plural, the plural shall be
deemed to include each of the singular, and pronouns of one or no gender shall
be deemed to include the equivalent pronoun of the other or no gender.

         IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed as of the 9th day of May, 2003.

                                          INVISA, INC.

                                          By: /s/ Stephen A. Michael, President
                                              ----------------------------------
                                              Stephen A. Michael
                                              President

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                                    EXHIBIT 1
                     NOTICE OF ELECTION TO EXERCISE WARRANT

         The undersigned hereby irrevocably elects to exercise the right,
represented by the Warrant Certificate dated as of __________, ____, to purchase
__________ shares of the Common Stock, no par value, of INVISA, INC. and tenders
herewith payment in accordance with Section 1 of said Common Stock Purchase
Warrant.

__   CASH:    $__________________________  =  (Exercise Price x Exercise Shares)

              Payment is being made by:
                   __   enclosed check
                   __   wire transfer
                   __   other

__   CASHLESS EXERCISE

     Net number of Warrant Shares to be issued to Holder: _________*

     * based on:       Current Market Value - (Exercise Price x Exercise Shares)
                       ---------------------------------------------------------
                                       Market Price of Common Stock
     where:
     Market Price of Common Stock ["MP"]         =  $_______________
     Current Market Value [MP x Exercise Shares] =  $_______________

     Please deliver the stock certificate to:

Dated:

_________________________________________
[Name of Holder]

By: _____________________________________<PAGE>

                                                                   Exhibit 10.65

                          REGISTRATION RIGHTS AGREEMENT

         THIS REGISTRATION RIGHTS AGREEMENT, dated as of May 9, 2003 (this
"Agreement"), is made by and between INVISA, INC., a Nevada corporation, with
headquarters located at 4400 Independence Court, Sarasota, Florida 34234 (the
"Company"), and the entity named on a signature page hereto (each, an "Initial
Investor") (each agreement with an Initial Investor being deemed a separate and
independent agreement between the Company and such Initial Investor, except that
each Initial Investor acknowledges and consents to the rights granted to each
other Initial Investor under such agreement).

                              W I T N E S S E T H:

         WHEREAS, upon the terms and subject to the conditions of the Financing
Agreement, dated as of May 7, 2003, between the Initial Investor, as Lender and
the Company (the "Financing Agreement"), the Company has agreed to issue and the
Initial Investor has agreed to fund the Company's 2003A 7% Convertible Note Due
June 9,2004 ("Note"); and

         WHEREAS, the Note is convertible into shares of Common Stock (the
"Conversion Shares", which term, for purposes of this Agreement, shall include
shares of Common Stock of the Company issuable in lieu of accrued interest as
contemplated by the Note) upon the terms and subject to the conditions contained
in the Note; and

         WHEREAS, upon the terms and subject to the conditions of the Investment
Agreement, dated as of May 7, 2003, between the Initial Investor and the Company
(the "Investment Agreement"), the Company has agreed to sell and the Initial
Investor has agreed to buy shares of Common Stock (the "Investment Agreement
Shares", which terms, for purposes of this Agreement, shall include all shares
issued and sold by the Company as contemplated by the Investment Agreement);

         WHEREAS, upon the terms and subject to the conditions of the Investment
Agreement, the Company has agreed to issue Warrants to purchase shares of the
Company's Common Stock (the "Warrant Shares"); and

         WHEREAS, to induce the Initial Investor to execute and deliver the
Financing Agreement and the Investment Agreement, the Company has agreed to
provide certain registration rights under the Securities Act of 1933, as
amended, and the rules and regulations thereunder, or any similar successor
statute (collectively, the "Securities Act"), with respect to the Registrable
Securities;

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the Company and the
Initial Investor hereby agree as follows:

<PAGE>

         1. DEFINITIONS. Capitalized terms not otherwise defined herein shall
have the meanings ascribed to them in the Financing Agreement As used in this
Agreement, the following terms shall have the following meanings:

         (a) "Closing Date" means the date hereof.

         (b) "Effective Date" means the date the SEC declares a Registration
Statement covering Registrable Securities and otherwise meeting the conditions
contemplated hereby to be effective.

         (c) "Initial Investor" means Barbell Group, Inc., a Panama corporation.

         (d) "Investors" means the Initial Investor and any permitted transferee
or assignee who agrees to become bound by the provisions of this Agreement in
accordance with Section 9 hereof and who holds or Registrable Securities.

         (e) "Potential Material Event" means any of the following: (i) the
possession by the Company of material information not ripe for disclosure in a
registration statement, which shall be evidenced by a determination in good
faith by the Board of Directors of the Company that disclosure of such
information in the registration statement would be detrimental to the business
and affairs of the Company or (ii) any material engagement or activity by the
Company which would, in the good faith determination of the Board of Directors
of the Company, be adversely affected by disclosure in a registration statement
at such time; in each case where such determination shall be accompanied by a
good faith determination by the Board of Directors of the Company that the
registration statement would be materially misleading absent the inclusion of
such information.

         (f) "Principal Trading Market" means The NASDAQ/Over-the-Counter
Bulletin Board Market or the National Quotations Systems Pink Sheets or the
American Stock Exchange or the NASDAQ Small Cap Market..

         (g) "Register," "Registered," and "Registration" refer to a
registration effected by preparing and filing a Registration Statement or
Statements in compliance with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering securities on a
continuous basis ("Rule 415"), and the declaration or ordering of effectiveness
of such Registration Statement by the United States Securities and Exchange
Commission (the "SEC").

         (h) "Registrable Securities" means the Conversion Shares, Investment
Agreement Shares and Warrant Shares.

         (i) "Registration Statement" means a registration statement of the
Company under the Securities Act covering Registrable Securities on Form SB-2,
if the Company is then eligible to file using such form, and if not eligible, on
Form S-1 or other appropriate form.

<PAGE>

         2. REGISTRATION.

         (a) MANDATORY REGISTRATION.

         (i) The Company shall prepare and file with the SEC within thirty (30)
days after the Closing Date commencing on May 12, 2003 ("Filing Date") a
Registration Statement registering for resale by the Investor a sufficient
number of shares of Common Stock for the Initial Investors to sell the
Registrable Securities, but in no event less than the number of shares equal to
the aggregate of (x) two hundred percent (200%) of the number of shares into
which the Note and all interest thereon through the Maturity Date (as defined in
the Note) would be convertible at the time of filing of such Registration
Statement (assuming for such purposes that all Notes had been issued, had been
eligible to be converted, and had been converted, into Conversion Shares in
accordance with their terms, whether or not such issuance, eligibility, accrual
of interest or conversion had in fact occurred as of such date) The Registration
Statement shall also state that, in accordance with Rule 416 and 457 under the
Securities Act, it also covers such indeterminate number of additional shares of
Common Stock as may become issuable upon conversion of the Notes to prevent
dilution resulting from stock splits, or stock dividends. The Company will cause
such Registration Statement to be declared effective on a date (the "Required
Effective Date") which is no later than the earlier of (Y) five (5) business
days after oral or written notice by the SEC that it may be declared effective
or (Z) ninety (90) days after May 12, 2003 ("Registration Effective Date"),
provided that the Registration Effective Date will be extended once to one
hundred twenty (120) days after May 12, 2003 only if all of the following occur:
(1) the Company files the Registration Statement no later than fifteen (15) days
after May 12, 2003; (ii) the Company files an amendment to the Registration
Statement on each date which is no later than ten (10) days after the Company
receives any comments letter on the Registration Statement from the SEC; and
(iii) the Company faxes to Investor's counsel, Edward H. Burnbaum, Esq. at
212-986-2907, each letter containing SEC comments on the Registration Statement
within three (3) business days of receiving each such letter from the SEC.

         (ii) The aggregate number of shares registered for the Investors in
each Registration Statement or amendment thereto shall be allocated among the
Investors on a pro rata basis among them according to their relative Registrable
Shares included in such Registration Statement.

         (iii) Initial Investor and any assignees of the Initial Investor agree
timely to provide all reasonably requested information concerning the Initial
Investor and any assignees which are required for the Registration Statement and
any amendment thereto.

         (b) RESERVED.

         3. OBLIGATIONS OF THE COMPANY. In connection with the registration of
the Registrable Securities, the Company shall do each of the following:

         (a) Prepare promptly, and file with the SEC a Registration Statement
with respect to not less than the number of Registrable Securities provided in
Section 2(a) above, and thereafter use its reasonable best efforts to cause such
Registration Statement relating to Registrable Securities to become effective by
the Required Effective Date and keep the Registration Statement effective at all
times during the period (the "Registration Period") continuing until the earlier
of (i) the date when the Investors may sell all Registrable Securities under
Rule 144(k) without volume or other restrictions or limits or (ii) the date the
Investors no longer own any of the Registrable Securities, which Registration
Statement (including any amendments or supplements thereto and Prospectuses, as
defined below, contained therein) shall not contain any untrue statement of a
material fact or omit to state a material fact required to be

<PAGE>

stated therein or necessary to make the statements therein, in light of the
circumstances in which they were made, not misleading;

         (b) Prepare and file with the SEC such amendments (including
post-effective amendments) and supplements to the Registration Statement and the
Prospectus used in connection with the Registration Statement as may be
necessary to keep the Registration Statement effective at all times during the
Registration Period, and, during the Registration Period, comply with the
provisions of the Securities Act with respect to the disposition of all
Registrable Securities of the Company covered by the Registration Statement
until such time as all of such Registrable Securities have been disposed of in
accordance with the intended methods of disposition by the seller or sellers
thereof as set forth in the Registration Statement;

         (c) Permit a single firm of counsel designated by the Initial Investor
(which, until further notice, shall be deemed to be Novack Burnbaum Crystal LLP,
which firm has requested to receive such notification; each, an "Investor's
Counsel") to review the Registration Statement and all amendments and
supplements thereto a reasonable period of time (but not less than three (3)
business days) prior to their filing with the SEC, and not file any document in
a form to which such counsel reasonably objects;

         (d) Notify each Investor and the Investor's Counsel and any managing
underwriters immediately (and, in the case of (i)(A) below, not less than three
(3) business days prior to such filing) and (if requested by any such person)
confirm such notice in writing no later than one (1) business day following the
day (i)(A) when a Prospectus or any Prospectus supplement or post-effective
amendment to the Registration Statement is proposed to be filed; (B) whenever
the SEC notifies the Company whether there will be a "review" of such
Registration Statement; (C) whenever the Company receives (or a representative
of the Company receives on its behalf) any oral or written comments from the SEC
in respect of a Registration Statement (copies or, in the case of oral comments,
summaries of such comments shall be promptly furnished by the Company to the
Investors); and (D) with respect to the Registration Statement or any
post-effective amendment, when the same has become effective; (ii) of any
request by the SEC or any other Federal or state governmental authority for
amendments or supplements to the Registration Statement or Prospectus or for
additional information; (iii) of the issuance by the SEC of any stop order
suspending the effectiveness of the Registration Statement covering any or all
of the Registrable Securities or the initiation of any proceedings for that
purpose; (iv) if at any time any of the representations or warranties of the
Company contained in any agreement (including any underwriting agreement)
contemplated hereby ceases to be true and correct in all material respects; (v)
of the receipt by the Company of any notification with respect to the suspension
of the qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction, or the initiation or threatening of any
proceeding for such purpose; and (vi) of the occurrence of any event that to the
best knowledge of the Company makes any statement made in the Registration
Statement or Prospectus or any document incorporated or deemed to be
incorporated therein by reference untrue in any material respect or that
requires any revisions to the Registration Statement, Prospectus or other
documents so that, in the case of the Registration Statement or the Prospectus,
as the case may be, it will not contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading. In addition, the Company shall furnish the Investor's
Counsel with copies of all intended written responses to the comments
contemplated in clause (C) of this Section 3(d) not later than one (1) business
day in advance of

<PAGE>

the filing of such responses with the SEC so that the Investors shall have the
opportunity to comment thereon;

         (e) Furnish to each Investor and to Investor's Counsel (i) promptly
after the same is prepared and publicly distributed, filed with the SEC, or
received by the Company, one (1) copy of the Registration Statement, each
preliminary Prospectus and Prospectus, and each amendment or supplement thereto,
and (ii) such number of copies of a Prospectus, and all amendments and
supplements thereto and such other documents, as such Investor may reasonably
request in order to facilitate the disposition of the Registrable Securities
owned by such Investor;

         (f) As promptly as practicable after becoming aware thereof, notify
each Investor of the happening of any event of which the Company has knowledge,
as a result of which the Prospectus included in the Registration Statement, as
then in effect, includes an untrue statement of a material fact or omits to
state a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading, and use its best efforts promptly to prepare a supplement or
amendment to the Registration Statement or other appropriate filing with the SEC
to correct such untrue statement or omission, and deliver a number of copies of
such supplement or amendment to each Investor as such Investor may reasonably
request;

         (g) As promptly as practicable after becoming aware thereof, notify
each Investor who holds Registrable Securities being sold (or, in the event of
an underwritten offering, the managing underwriters) of the issuance by the SEC
of a notice of effectiveness or any stop order or other suspension of the
effectiveness of the Registration Statement at the earliest possible time;

         (h) Notwithstanding the foregoing, if at any time or from time to time
after the date of effectiveness of the Registration Statement, the Company
notifies the Investors in writing of the existence of a Potential Material
Event, the Investors shall not offer or sell any Registrable Securities, or
engage in any other transaction involving or relating to the Registrable
Securities, from the time of the giving of notice with respect to a Potential
Material Event until such Investor receives written notice from the Company that
such Potential Material Event either has been disclosed to the public or no
longer constitutes a Potential Material Event; provided, however, that the
Company shall, if lawful to do so, provide the Investor with at least two (2)
business days' notice of the existence (but not the substance of) a Potential
Material Event;

         (i) Use its reasonable efforts to secure and maintain the designation
of all the Registrable Securities covered by the Registration Statement on the
Principal Trading Market and the quotation of the Registrable Securities on the
Principal Trading Market.

         (j) Provide a transfer agent ("Transfer Agent") and registrar, which
may be a single entity, for the Registrable Securities not later than the
initial Effective Date.

         (k) Cooperate with the Investors who hold Registrable Securities being
offered to facilitate the timely preparation and delivery of certificates for
the Registrable Securities to be offered pursuant to the Registration Statement
and enable such certificates for the Registrable Securities to be in such
denominations or amounts as the case may be, as the Investors may reasonably
request, and, within five (5) business days after a Registration Statement which
includes Registrable Securities is ordered effective by the SEC, the Company

<PAGE>

shall deliver, and shall cause legal counsel selected by the Company to deliver,
to the Transfer Agent for the Registrable Securities (with copies to the
Investors whose Registrable Securities are included in such Registration
Statement) an appropriate instruction and opinion of such counsel, which shall
include, without limitation, directions to the Transfer Agent to issue
certificates of Registrable Securities(including certificates for Registrable
Securities to be issued after the Effective Date and replacement certificates
for Registrable Securities previously issued) without legends or other
restrictions; and

         (l) Take all other reasonable actions necessary to expedite and
facilitate disposition by the Investor of the Registrable Securities pursuant to
the Registration Statement.

         4. OBLIGATIONS OF THE INVESTORS. In connection with the registration of
the Registrable Securities, the Investors shall have the following obligations:

         (a) Each Investor, by such Investor's acceptance of the Registrable
Securities, agrees to cooperate with the Company as reasonably requested by the
Company in connection with the preparation and filing of the Registration
Statement hereunder, unless such Investor has notified the Company in writing of
such Investor's election to exclude all of such Investor's Registrable
Securities from the Registration Statement; and

         (b) Each Investor agrees that, upon receipt of any notice from the
Company of the happening of any event of the kind described in Section 3(f) or
3(g), above, such Investor will immediately discontinue disposition of
Registrable Securities pursuant to the Registration Statement covering such
Registrable Securities until such Investor's receipt of the copies of the
supplemented or amended Prospectus contemplated by Section 3(f) or 3(g) and, if
so directed by the Company, such Investor shall deliver to the Company (at the
expense of the Company) or destroy (and deliver to the Company a certificate of
destruction) all copies in such Investor's possession, of the Prospectus
covering such Registrable Securities current at the time of receipt of such
notice.

         (c) Each Investor shall as promptly as practicable, notify the Company
in writing of the happening of any event of which the Investor has knowledge, as
a result of which the Registration Statement, as then in effect, contains an
untrue statement of a material fact or omits to state a material fact required
to be disclosed, or make the statements therein not misleading, and provide the
Company with information required to prepare an amendment or supplement to the
Registration Statement or other appropriate filing with the SEC.

         (d) Each Investor shall provide the Company with complete and accurate
information about the Investor or the sale of the Company's securities, which in
the reasonable judgment of the Company's counsel, is required to be included in
the Registration Statement pursuant to applicable securities laws.

         5. EXPENSES OF REGISTRATION. All reasonable expenses (other than
underwriting discounts and commissions of the Investor) incurred in connection
with registrations, filings or qualifications pursuant to Section 3, but
including, without limitation, all registration, listing, and qualifications
fees, printers and accounting fees, the fees and disbursements of counsel for
the Company shall be borne by the Company.

         6. INDEMNIFICATION. After Registrable Securities are included in a
Registration Statement under this Agreement:

<PAGE>

         (a) To the extent permitted by law, the Company will indemnify and hold
harmless, the Investor, the directors, if any, of such Investor, the officers,
if any, of such Investor, and each Person (each, an "Indemnified Party"),
against any losses, claims, damages, liabilities or expenses (joint or several)
incurred (collectively, "Claims") to which any of them may become subject under
the Securities Act, the Securities Exchange Act of 1934, as amended (the
"Exchange Act") or otherwise, insofar as such Claims (or actions or proceedings,
whether commenced in respect thereof) arise out of or are based upon: (i) any
untrue statement or alleged untrue statement of a material fact contained in the
Registration Statement or any post-effective amendment thereof or the omission
or alleged omission to state therein a material fact required to be stated
therein or necessary to make the statements therein not misleading, (ii) any
untrue statement or alleged untrue statement of a material fact contained in the
final Prospectus (as amended or supplemented, if the Company files any amendment
thereof or supplement thereto with the SEC) or the omission or alleged omission
to state therein any material fact necessary to make the statements made
therein, in the light of the circumstances under which the statements therein
were made, not misleading or (iii) any violation or alleged violation by the
Company of the Securities Act, the Exchange Act, any state securities law or any
rule or regulation under the Securities Act, the Exchange Act or any state
securities law (the matters in the foregoing clauses (i) through (iii) being
collectively referred to as "Violations"). The Company shall reimburse the
Investor, promptly as such expenses are incurred and are due and payable, for
any reasonable legal fees or other reasonable expenses incurred by them in
connection with investigating or defending any such Claim. Notwithstanding
anything to the contrary contained herein, the indemnification agreement
contained in this Section 6(a) shall not (i) apply to any Claims arising out of
or based upon a Violation which occurs in reliance upon and in conformity with
information furnished in writing to the Company by or on behalf of any
Indemnified Party expressly for use in connection with the preparation of the
Registration Statement or any such amendment thereof or supplement thereto, if
such Prospectus was timely made available by the Company pursuant to Section
3(c) hereof; (ii) be available to the extent such Claim is based on a failure of
the Investor to deliver or cause to be delivered the Prospectus made available
by the Company; or (iii) apply to amounts paid in settlement of any Claim if
such settlement is effected without the prior written consent of the Company,
which consent shall not be unreasonably withheld. The Investor will indemnify
the Company, its officers, directors and agents (including legal counsel) (each
an "Indemnified Party") against any claims arising out of or based upon a
Violation which occurs in reliance upon and in conformity with information
furnished in writing to the Company, by or on behalf of such Investor, expressly
for use in connection with the preparation of the Registration Statement,
subject to such limitations and conditions set forth in this Section 6. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of the Indemnified Party, and shall survive the offering
and transfer of the Registrable Securities by the Investor.

         (b) Promptly after receipt by an Indemnified Party under this Section 6
of notice of the commencement of any action (including any governmental action),
such Indemnified Party shall, if a Claim in respect thereof is to be made
against any indemnifying party under this Section 6, deliver to the indemnifying
party a written notice of the commencement thereof and the indemnifying party
shall have the right to participate in, and, to the extent the indemnifying
party so desires, jointly with any other indemnifying party similarly noticed,
to assume control of the defense thereof with counsel mutually satisfactory to
the indemnifying party and the Indemnified Party, as the case may be; provided,
however, that an Indemnified Party shall have the right to retain its own
counsel with the reasonable fees and expenses to be paid by the indemnifying
party, if, in the reasonable opinion of counsel retained

<PAGE>

by the indemnifying party, the representation by such counsel of the Indemnified
Party and the indemnifying party would be inappropriate due to actual or
potential differing interests between such Indemnified Party and any other party
represented by such counsel in such proceeding. The failure to deliver written
notice to the indemnifying party within a reasonable time of the commencement of
any such action shall not relieve such indemnifying party of any liability to
the Indemnified Party under this Section 6, except to the extent that the
indemnifying party is prejudiced in its ability to defend such action. The
indemnification required by this Section 6 shall be made by periodic payments of
the amount thereof during the course of the investigation or defense, as such
expense, loss, damage or liability is incurred and is due and payable.

         7. CONTRIBUTION. To the extent any indemnification by an indemnifying
party is prohibited or limited by law, the indemnifying party agrees to make the
maximum contribution with respect to any amounts for which it would otherwise be
liable under Section 6 to the fullest extent permitted by law; provided,
however, that (a) no contribution shall be made under circumstances where the
maker would not have been liable for indemnification under the fault standards
set forth in Section 6; (b) no seller of Registrable Securities guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any seller of Registrable
Securities who was not guilty of such fraudulent misrepresentation; and (c)
except where the seller has committed fraud (other than a fraud by reason of the
information included or omitted from the Registration Statement as to which the
Company has not given notice as contemplated under Section 3 hereof) or
intentional misconduct, contribution by any seller of Registrable Securities
shall be limited in amount to the net amount of proceeds received by such seller
from the sale of such Registrable Securities.

         8. REPORTS UNDER SECURITIES ACT AND EXCHANGE ACT. With a view to making
available to Investor the benefits of Rule 144 promulgated under the Securities
Act or any other similar rule or regulation of the SEC that may at any time
permit Investor to sell securities of the Company to the public without
Registration ("Rule 144"), the Company agrees to:

         (a) make and keep public information available, as those terms are
understood and defined in Rule 144;

         (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act;

         (c) furnish to the Investor so long as the Investor owns Registrable
Securities, promptly upon request, (i) a written statement by the Company that
it has complied with the reporting requirements of Rule 144, the Securities Act
and the Exchange Act, (ii) if not available on the SEC's EDGAR system, a copy of
the most recent annual or quarterly report of the Company and such other reports
and documents so filed by the Company and (iii) such other information as may be
reasonably requested to permit the Investor to sell such securities pursuant to
Rule 144 without Registration; and

         (d) at the request of any Investor holding Registrable Securities (a
"Holder"), give its Transfer Agent irrevocable instructions (supported by an
opinion of Company counsel, if required or requested by the Transfer Agent) to
the effect that, upon the Transfer Agent's receipt from such Holder of

<PAGE>

         (i) a certificate (a "Rule 144 Certificate") certifying (A) that the
         Holder's holding period (as determined in accordance with the
         provisions of Rule 144) for the shares of Registrable Securities which
         the Holder proposes to sell (the "Securities Being Sold") is not less
         than (1) year and (B) as to such other matters as may be appropriate in
         accordance with Rule 144 under the Securities Act, and

         (ii) an opinion of counsel acceptable to the Company (for which
         purposes it is agreed that the initial Investor's counsel shall be
         deemed acceptable) within three (3) business days after request by the
         Investor that, based on the Rule 144 Certificate, Securities Being Sold
         may be sold pursuant to the provisions of Rule 144, even in the absence
         of an effective Registration Statement,

the Transfer Agent is to effect the transfer of the Securities Being Sold and
issue to the buyer(s) or transferee(s) thereof one or more stock certificates
representing the transferred Securities Being Sold without any restrictive
legend and without recording any restrictions on the transferability of such
shares on the Transfer Agent's books and records (except to the extent any such
legend or restriction results from facts other than the identity of the Holder,
as the seller or transferor thereof, or the status, including any relevant
legends or restrictions, of the shares of the Securities Being Sold while held
by the Holder). If the Transfer Agent reasonably requires any additional
documentation at the time of the transfer, the Company shall deliver or cause to
be delivered all such reasonable additional documentation as may be necessary to
effectuate the issuance of an unlegended certificate.

         9. ASSIGNMENT OF THE REGISTRATION RIGHTS. The rights to have the
Company register Registrable Securities pursuant to this Agreement shall be
automatically assigned by the Investors to any transferee of the Registrable
Securities (or all or any portion of any unconverted Debentures) only if the
Company is, within a reasonable time after such transfer or assignment,
furnished with written notice of (a) the name and address of such transferee or
assignee and (b) the securities with respect to which such registration rights
are being transferred or assigned, and further provided that any assignee of
Registrable Securities agrees to be bound by the terms and conditions of this
Agreement. In the event Registrable Securities are assigned after a Registration
Statement has become effective pursuant to this Agreement, the Company's
obligation with regard to any such assignee shall be limited to amending its
effective Registration Statement with regard to any such assignees.

         10. AMENDMENT OF REGISTRATION RIGHTS. Any provision of this Agreement
may be amended and the observance thereof may be waived (either generally or in
a particular instance and either retroactively or prospectively), only with the
written consent of the Company and Investors who hold a eighty (80%) percent
interest of the Registrable Securities (as calculated by the stated value of the
Notes). Any amendment or waiver effected in accordance with this Section 10
shall be binding upon each Investor and the Company.

         11. MISCELLANEOUS.

         (a) A person or entity is deemed to be a holder of Registrable
Securities whenever such person or entity owns of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more persons or entities with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions,
notice or election received from the registered owner of such Registrable
Securities.

<PAGE>

         (b) Notices required or permitted to be given hereunder shall be given
in the manner contemplated by the Financing Agreement, (i) if to the Company or
to the Initial Investor, to their respective address contemplated by the
Financing Agreement, and (ii) if to any other Investor, at such address as such
Investor shall have provided in writing to the Company, or at such other address
as each such party furnishes by notice given in accordance with this Section
11(b).

         (c) Failure of any party to exercise any right or remedy under this
Agreement or otherwise, or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

         (d) This Agreement shall be governed by and interpreted in accordance
with the laws of the State of New York for contracts to be wholly performed in
such state and without giving effect to the principles thereof regarding the
conflict of laws. Each of the parties consents to the jurisdiction of the
federal courts whose districts encompass any part of the City of New York or the
state courts of the State of New York sitting in the City of New York in
connection with any dispute arising under this Agreement and hereby waives, to
the maximum extent permitted by law, any objection, including any objection
based on forum non coveniens, to the bringing of any such proceeding in such
jurisdictions.

         (e) The Company and the Investor hereby waive a trial by jury in any
action, proceeding or counterclaim brought by either of the parties hereto
against the other in respect of any matter arising out of or in connection with
this Agreement or any of the other Transaction Agreements.

         (f) If any provision of this Agreement shall be invalid or
unenforceable in any jurisdiction, such invalidity or unenforceability shall not
affect the validity or enforceability of the remainder of this Agreement or the
validity or enforceability of this Agreement in any other jurisdiction.

         (g) Subject to the requirements of Section 9 hereof, this Agreement
shall inure to the benefit of and be binding upon the successors and assigns of
each of the parties hereto.

         (h) All pronouns and any variations thereof refer to the masculine,
feminine or neuter, singular or plural, as the context may require.

         (i) The headings in this Agreement are for convenience of reference
only and shall not limit or otherwise affect the meaning thereof.

         (j) This Agreement may be executed in one or more counterparts, each of
which shall be deemed an original but all of which shall constitute one and the
same agreement. This Agreement, once executed by a party, may be delivered to
the other party hereto by telephone line facsimile transmission of a copy of
this Agreement bearing the signature of the party so delivering this Agreement.

         (k) Neither party shall be liable to the other party hereunder for any
indirect, special, incidental or consequential damages.

         (l) This Agreement constitutes the entire agreement among the parties
hereto with respect to the subject matter hereof. There are no restrictions,
promises, warranties or

<PAGE>

undertakings, other than those set forth or referred to herein. This Agreement
supersedes all prior agreements and understandings among the parties hereto with
respect to the subject matter hereof. This Agreement may be amended only by an
instrument in writing signed by the party to be charged with enforcement
thereof.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

<PAGE>

                IN WITNESS WHEREOF, the parties have caused this Agreement to be
duly executed by their respective officers thereunto duly authorized as of the
day and year first above written.

                                           COMPANY:

                                           INVISA, INC.

                                           By: /s/ Stephen A. Michael, President
                                               ---------------------------------
                                           Name:  Stephen A. Michael
                                           Title: President

                                           INITIAL INVESTOR:

                                           BARBELL GROUP, INC.

                                           By:
                                               ---------------------------------
                                           Name:
                                           Title:

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