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                                                                   EXHIBIT 10.90

                                  INVISA, INC.
                               2003 INCENTIVE PLAN

                             STOCK OPTION AGREEMENT

<TABLE>
<CAPTION>
<S>                                  <C>
OPTION AGREEMENT NUMBER:             2003-1

DATE OF GRANT/AWARD:                 November 6, 2003

NAME OF OPTIONEE:                    Herb M. Lustig

OPTIONEE'S SOCIAL SECURITY NUMBER:   ###-##-####

INITIAL VESTING DATE:                June 30, 2004

INITIAL EXERCISE DATE:               June 30, 2004

EXPIRATION DATE:                     November 6,  2013(the "Option Termination Date")
</TABLE>


      1. Dated as of the  above-stated  Date of Grant/Award (the "Grant Date") a
Stock  Option  (the  "Option")  is hereby  granted to the  above-named  Optionee
pursuant to the Invisa,  Inc. 2003 Incentive Plan, as amended (the "Plan").  The
Award of this Option  conveys to the Optionee the right to purchase from Invisa,
Inc. (the "Company") up to One Million Four Hundred Thousand  (1,400,000) shares
of Stock (the "Option Shares") under the Plan at an exercise price of $ 3.41 per
share.  To the  fullest  extent  possible,  the  Option  shall be  treated as an
Incentive  Stock  Option,  as such  term is  defined  under  Section  422 of the
Internal Revenue Code. To the extent the Option is not eligible to be treated as
an Incentive  Stock Option in full,  the part that is not eligible for Incentive
Stock Option treatment shall be treated as a Nonqualified Stock Option.

      2. Except as specifically  provided herein, the rights of the Optionee, or
of any other person  entitled to exercise the Option,  are governed by the terms
and provisions of the Plan.  The Option is granted  pursuant to the terms of the
Plan,  which are incorporated  herein by reference,  and the Option shall in all
respects  be  interpreted  in  accordance  with the  Plan.  Notwithstanding  the
foregoing  or anything to the contrary in the Plan  (including,  but not limited
to,  Section 6.7 (b)),  the Option shall not be  terminated  prior to, and shall
continue  to be  exercisable  until,  the  Option  Termination  Date even  after
Optionee's termination of Service for any reason.


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      3. To the extent not previously  exercise,  the Option and all rights with
respect  thereto,  shall  terminate  and  become  null  and  void on the  Option
Termination Date.

      4. The Option is  exercisable in  installments  as provided  below,  which
shall be cumulative.  To the extent that the Option has become  exercisable with
respect to a number of shares of Stock, the Option may be exercised, in whole or
in part, at any time or from time to time prior to the Option  Termination Date.
The following  table  indicates  each date (the  "Vesting  Date") upon which the
Optionee  shall be entitled to exercise the Option with respect to the number of
shares of Stock indicated beside the date.

      NUMBER OF SHARES OF STOCK                          VESTING DATE
      -------------------------                          ------------
               233,340                                  June 30, 2004
               116,666                                September 30, 2004
               116,666                                December 31, 2004
               116,666                                  March 31, 2005
               116,666                                  June 30, 2005
               116,666                                September 30, 2005
               116,666                                December 31, 2005
               116,666                                  March 31, 2006
               116,666                                  June 30, 2006
               116,666                                September 30, 2006
               116,666                                December 31, 2006

      Except  as  otherwise  specifically  provided  herein,  there  shall be no
proportionate  or partial vesting in the periods prior to each Vesting Date, and
all vesting  shall  occur only on the  respective  Vesting  Date.  Any  unvested
portion of the Option will terminate  upon a termination of Optionee's  Services
unless,  in the event of a termination of Services without cause,  such unvested
portion becomes vested pursuant to the Optionee's  Employment Agreement with the
Company.  The vested portion of the Option will not terminate as the result of a
termination of Optionee's Services.

      5. The Option shall be deemed to be fully  vested,  without  regard to the
above  table,  upon  (a) a sale,  merger  or  other  transaction  by one or more
shareholders of the Company of more than 50% of the Company's  Common Stock to a
person or entity which is not directly or  indirectly  related to or  affiliated
with the sellers of such Common Stock,  (b) a sale or exchange of  substantially
all the assets of the Company, or (c) a change of control of the Company.

      6. The Option may be exercised by the  Optionee's  heirs,  successors,  or
legal representatives.

      7. The  Option  may be  exercised  with  respect to all or any part of the
number of Vested Shares by the giving of written notice ("Notice") of the intent


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to  exercise  to the  Company  at  least  five  days  prior to the date on which
exercise is to occur.  The Notice shall specify the exercise date and the number
of Option Shares as to which the Option is to be exercised.  Full payment of the
Option  exercise price by any of the means of  consideration  provided for under
the Plan shall be made on or before the exercise  date  specified in the Notice.
Such full payment  having  occurred on or before the exercise date  specified in
the Notice, as soon thereafter as is practicable,  the Company shall cause to be
delivered to the Optionee a certificate  of  certificates  for the Option Shares
then being purchased.  If the Optionee fails to pay for any or the Option Shares
specified  in the  Notice,  or fails to accept  delivery of Option  Shares,  the
Optionee's  right to  purchase  such  Option  Shares  may be  terminated  by the
Company.

      The option  exercise price and tax  withholding  may be paid in cash or in
shares of the Company's Common Stock owned by Optionee for at least 6 months, at
its Fair Market  Value (as defined  below) on the date  preceding  the  exercise
date.

      "FAIR MARKET VALUE" means,  as of a specific date, with respect to a share
of Stock of the  Company,  the  closing  price on such date (or,  if there is no
closing  price,  then the closing bid price) of the Company's  Stock reported on
the Composite Tape, or if not reported  thereon,  then such price as reported in
the trading reports of the principal securities exchange in the United States on
which  the  Stock is  listed,  or if the  Stock is not  listed  on a  securities
exchange in the United  States,  the mean between the dealer  closing  "bid" and
"ask"  prices  on the  over-the-counter  market  as  reported  by  the  National
Association of Security Dealers Automated Quotation System (NASDAQ), or NASDAQ's
successor,  or if not reported on NASDAQ, the fair market value of such stock as
determined  by the Board of  Directors  in good faith and based on all  relevant
factors.

      8. There are no  restrictions  or rights of first  refusal  or  repurchase
rights with  respect to any share  acquired  as a result of the  exercise of the
Option,  except as required by any applicable  federal or state securities laws.
The Company  agrees to use its best effort to have any shares of Stock  acquired
by the  exercise  of the Option  registered  with the  Securities  and  Exchange
Commission  pursuant  to a  Form  S-8 or  other  registration  statement,  which
registration  statement  will be filed by the Company to the extent  practicable
within ten (10) months after the  effective  date of the  Optionee's  employment
agreement with the Company.

      9. The Optionee  acknowledges  having received and read a copy of the Plan
and this Agreement and agrees to comply with all laws,  rules,  and  regulations
applicable to the Award and to the sale or other disposition of the Stock of the
Company received.

      10. Any notice to the  Company  provided  for in this  Agreement  shall be
addressed to it in care of its  Secretary at its  executive  offices  located at
4400 Independence Court, Sarasota, Florida 34234, and any notice to the Optionee
shall be addressed to the Optonee at the address  currently shown on the payroll
records  of the  Company.  Any  notice  shall be deemed  duly  given if and when
properly addressed and posted by registered or certified mail, postage prepaid.

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      11. The  termination of the Plan will not affect the Option.  The terms of
the Option shall not be amended or modified without the consent of the Optionee.

      12.  In the event of an  inconsistency  between  the  terms of this  Stock
Option Agreement and the Plan, the Stock Option Agreement shall govern.

      IN WITNESS WHEREOF, Invisa, Inc. has caused its duly authorized offices to
execute  this Stock  Option  Agreement,  and the  Optionee has placed his or her
signature hereon, effective as of the Grant Date.

INVISA, INC.

By: /s/ Edmund C. King
Edmund C. King
Chief Financial Officer



ACCEPTED AND AGREED TO:



----------------------------
HERB M. LUSTIG



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