<PAGE>
                                                                    Exhibit 4.1


THIS WARRANT AND THE COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT HAVE
NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THIS WARRANT
AND THE COMMON SHARES ISSUABLE UPON EXERCISE OF THIS WARRANT MAY NOT BE SOLD,
OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE
REGISTRATION STATEMENT UNDER SAID ACT OR AN OPINION OF COUNSEL REASONABLY
SATISFACTORY TO SIVAULT SYSTEMS, INC. THAT SUCH REGISTRATION IS NOT REQUIRED.

               Right to  Purchase  _________  shares of Common Stock of SiVault
               Systems, Inc. (subject to adjustment as provided herein)

                      CLASS A COMMON STOCK PURCHASE WARRANT

No. 2004-OCT-001                                Issue Date: November ____, 2004

         SIVAULT SYSTEMS, INC., a corporation organized under the laws of the
State of Nevada (the "Company"), hereby certifies that, for value received,
LONGVIEW EQUITY FUND, LP, 600 Montgomery Street, 44th Floor, San Francisco, CA
94111, Fax: (415) 981-5300, or its assigns (the "Holder"), is entitled, subject
to the terms set forth below, to purchase from the Company at any time after the
Issue Date until 5:00 p.m., E.S.T on the fifth anniversary of the Issue Date
(the "Expiration Date"), up to ________ fully paid and nonassessable shares of
the common stock of the Company (the "Common Stock"), $.001 par value per share
at a per share purchase price of $3.00. The aforedescribed purchase price per
share, as adjusted from time to time as herein provided, is referred to herein
as the "Purchase Price." The number and character of such shares of Common Stock
and the Purchase Price are subject to adjustment as provided herein. The Company
may reduce the Purchase Price without the consent of the Holder. Capitalized
terms used and not otherwise defined herein shall have the meanings set forth in
that certain Subscription Agreement (the "SUBSCRIPTION AGREEMENT"), dated
November ___, 2004, entered into by the Company and the Holder.

         As used herein the following terms, unless the context otherwise
requires, have the following respective meanings:

         (a) The term "Company" shall include SiVault Systems, Inc. and any
corporation which shall succeed to or assume the obligations of SiVault Systems,
Inc. hereunder.

         (b) The term "Common Stock" includes (a) the Company's Common Stock,
$.001 par value per share, as authorized on the date of the Subscription
Agreement, and (b) any other securities into which or for which any of the
securities described in (a) may be converted or exchanged pursuant to a plan of
recapitalization, reorganization, merger, sale of assets or otherwise.

         (c) The term "Other Securities" refers to any stock (other than Common
Stock) and other securities of the Company or any other person (corporate or
otherwise) which the holder of the Warrant at any time shall be entitled to
receive, or shall have received, on the exercise of the Warrant, in lieu of or
in addition to Common Stock, or which at any time shall be issuable or shall
have been issued in exchange for or in replacement of Common Stock or Other
Securities pursuant to Section 4 or otherwise.


                                       1
<PAGE>

         1. Exercise of Warrant.

                  1.1. Number of Shares Issuable upon Exercise. From and after
the Issue Date through and including the Expiration Date, the Holder hereof
shall be entitled to receive, upon exercise of this Warrant in whole in
accordance with the terms of subsection 1.2 or upon exercise of this Warrant in
part in accordance with subsection 1.3, shares of Common Stock of the Company,
subject to adjustment pursuant to Section 4.

                  1.2. Full Exercise. This Warrant may be exercised in full by
the Holder hereof by delivery of an original or facsimile copy of the form of
subscription attached as Exhibit A hereto (the "Subscription Form") duly
executed by such Holder and surrender of the original Warrant within five (5)
days of exercise, to the Company at its principal office or at the office of its
Warrant Agent (as provided hereinafter), accompanied by payment, in cash, wire
transfer or by certified or official bank check payable to the order of the
Company, in the amount obtained by multiplying the number of shares of Common
Stock for which this Warrant is then exercisable by the Purchase Price then in
effect.

                  1.3. Partial Exercise. This Warrant may be exercised in part
(but not for a fractional share) by surrender of this Warrant in the manner and
at the place provided in subsection 1.2 except that the amount payable by the
Holder on such partial exercise shall be the amount obtained by multiplying (a)
the number of whole shares of Common Stock designated by the Holder in the
Subscription Form by (b) the Purchase Price then in effect. On any such partial
exercise, the Company, at its expense, will forthwith issue and deliver to or
upon the order of the Holder hereof a new Warrant of like tenor, in the name of
the Holder hereof or as such Holder (upon payment by such Holder of any
applicable transfer taxes) may request, the whole number of shares of Common
Stock for which such Warrant may still be exercised.

                  1.4. Fair Market Value. Fair Market Value of a share of Common
Stock as of a particular date (the "Determination Date") shall mean:

                           (a) If the Company's Common Stock is traded on an
exchange or is quoted on the National Association of Securities Dealers, Inc.
Automated Quotation ("NASDAQ"), National Market System, the NASDAQ SmallCap
Market or the American Stock Exchange, LLC, then the closing or last sale price,
respectively, reported for the last business day immediately preceding the
Determination Date;

                           (b) If the Company's Common Stock is not traded on an
exchange or on the NASDAQ National Market System, the NASDAQ SmallCap Market or
the American Stock Exchange, Inc., but is traded in the over-the-counter market,
then the average of the closing bid and ask prices reported for the five (5)
trading days immediately preceding the Determination Date;

                           (c) Except as provided in clause (d) below, if the
Company's Common Stock is not publicly traded, then as the Holder and the
Company agree, or in the absence of such an agreement, by arbitration in
accordance with the rules then standing of the American Arbitration Association,
before a single arbitrator to be chosen from a panel of persons qualified by
education and training to pass on the matter to be decided; or

                           (d) If the Determination Date is the date of a
liquidation, dissolution or winding up, or any event deemed to be a liquidation,
dissolution or winding up pursuant to the Company's charter, then all amounts to
be payable per share to holders of the Common Stock pursuant to the charter in
the event of such liquidation, dissolution or winding up, plus all other amounts
to be payable per share in respect of the Common Stock in liquidation under the
charter, assuming for the purposes of this clause (d) that all of the shares of
Common Stock then issuable upon exercise of all of the Warrants are outstanding
at the Determination Date.



                                       2
<PAGE>

                  1.5. Company Acknowledgment. The Company will, at the time of
the exercise of the Warrant, upon the request of the Holder hereof acknowledge
in writing its continuing obligation to afford to such Holder any rights to
which such Holder shall continue to be entitled after such exercise in
accordance with the provisions of this Warrant. If the Holder shall fail to make
any such request, such failure shall not affect the continuing obligation of the
Company to afford to such Holder any such rights.

                  1.6. Trustee for Warrant Holders. In the event that a bank or
trust company shall have been appointed as trustee for the Holder of the
Warrants pursuant to Subsection 3.2, such bank or trust company shall have all
the powers and duties of a warrant agent (as hereinafter described) and shall
accept, in its own name for the account of the Company or such successor person
as may be entitled thereto, all amounts otherwise payable to the Company or such
successor, as the case may be, on exercise of this Warrant pursuant to this
Section 1.

                  1.7 Delivery of Stock Certificates, etc. on Exercise. The
Company agrees that the shares of Common Stock purchased upon exercise of this
Warrant shall be deemed to be issued to the Holder hereof as the record owner of
such shares as of the close of business on the date on which this Warrant shall
have been surrendered and payment made for such shares as aforesaid. As soon as
practicable after the exercise of this Warrant in full or in part, and in any
event within five (5) days thereafter, the Company at its expense (including the
payment by it of any applicable issue taxes) will cause to be issued in the name
of and delivered to the Holder hereof at the address stated above, or as such
Holder (upon payment by such Holder of any applicable transfer taxes) may direct
in compliance with applicable securities laws, a certificate or certificates for
the number of duly and validly issued, fully paid and nonassessable shares of
Common Stock (or Other Securities) to which such Holder shall be entitled on
such exercise, plus, in lieu of any fractional share to which such Holder would
otherwise be entitled, cash equal to such fraction multiplied by the then Fair
Market Value of one full share of Common Stock, together with any other stock or
other securities and property (including cash, where applicable) to which such
Holder is entitled upon such exercise pursuant to Section 1 or otherwise.

          2.      Cashless Exercise.

                  (a) If a Registration Statement (as defined in the
Subscription Agreement) ("Registration Statement") is effective and the Holder
may sell its shares of Common Stock upon exercise hereof pursuant to the
Registration Statement, this Warrant may be exercisable in whole or in part for
cash only as set forth in Section 1 above. If no such Registration Statement is
available, then payment upon exercise may be made at the option of the Holder
either in (i) cash, wire transfer or by certified or official bank check payable
to the order of the Company equal to the applicable aggregate Purchase Price,
(ii) by delivery of Common Stock issuable upon exercise of the Warrants in
accordance with Section (b) below or (iii) by a combination of any of the
foregoing methods, for the number of Common Stock specified in such form (as
such exercise number shall be adjusted to reflect any adjustment in the total
number of shares of Common Stock issuable to the holder per the terms of this
Warrant) and the holder shall thereupon be entitled to receive the number of
duly authorized, validly issued, fully-paid and non-assessable shares of Common
Stock (or Other Securities) determined as provided herein.

                                       3
<PAGE>

                  (b) Subject to the provisions herein to the contrary, if the
Fair Market Value of one share of Common Stock is greater than the Purchase
Price (at the date of calculation as set forth below), in lieu of exercising
this Warrant for cash, the holder may elect to receive shares equal to the value
(as determined below) of this Warrant (or the portion thereof being cancelled)
by surrender of this Warrant at the principal office of the Company together
with the properly endorsed Subscription Form in which event the Company shall
issue to the holder a number of shares of Common Stock computed using the
following formula:

                  X=Y (A-B)
                    -------
                        A

         Where    X=   the number of shares of Common Stock to be issued to
                       the holder

                  Y=   the number of shares of Common Stock
                       purchasable under the Warrant or, if only a
                       portion of the Warrant is being exercised,
                       the portion of the Warrant being exercised
                       (at the date of such calculation)

                  A=   the Fair Market Value of one share of the
                       Company's Common Stock (at the date of such
                       calculation)

                  B=   Purchase Price (as adjusted to the date of such
                       calculation)

                  (c) The Holder may employ the cashless exercise feature
described in Section (b) above only during the pendency of a Non-Registration
Event as described in Section 11 of the Subscription Agreement.

         For purposes of Rule 144 promulgated under the 1933 Act, it is
intended, understood and acknowledged that the Warrant Shares issued in a
cashless exercise transaction shall be deemed to have been acquired by the
Holder, and the holding period for the Warrant Shares shall be deemed to have
commenced, on the date this Warrant was originally issued pursuant to the
Subscription Agreement.

         3.       Adjustment for Reorganization, Consolidation, Merger, etc.

                  3.1. Reorganization, Consolidation, Merger, etc. In case at
any time or from time to time, the Company shall (a) effect a reorganization,
(b) consolidate with or merge into any other person or (c) transfer all or
substantially all of its properties or assets to any other person under any plan
or arrangement contemplating the dissolution of the Company, then, in each such
case, as a condition to the consummation of such a transaction, proper and
adequate provision shall be made by the Company whereby the Holder of this
Warrant, on the exercise hereof as provided in Section 1, at any time after the
consummation of such reorganization, consolidation or merger or the effective
date of such dissolution, as the case may be, shall receive, in lieu of the
Common Stock (or Other Securities) issuable on such exercise prior to such
consummation or such effective date, the stock and other securities and property
(including cash) to which such Holder would have been entitled upon such
consummation or in connection with such dissolution, as the case may be, if such
Holder had so exercised this Warrant, immediately prior thereto, all subject to
further adjustment thereafter as provided in Section 4.

                  3.2. Dissolution. In the event of any dissolution of the
Company following the transfer of all or substantially all of its properties or
assets, the Company, prior to such dissolution, shall at its expense deliver or
cause to be delivered the stock and other securities and property (including
cash, where applicable) receivable by the Holder of the Warrants after the
effective date of such dissolution pursuant to this Section 3 to a bank or trust
company (a "Trustee") having its principal office in New York, NY, as trustee
for the Holder of the Warrants.

                                       4
<PAGE>

                  3.3. Continuation of Terms. Upon any reorganization,
consolidation, merger or transfer (and any dissolution following any transfer)
referred to in this Section 3, this Warrant shall continue in full force and
effect and the terms hereof shall be applicable to the Other Securities and
property receivable on the exercise of this Warrant after the consummation of
such reorganization, consolidation or merger or the effective date of
dissolution following any such transfer, as the case may be, and shall be
binding upon the issuer of any Other Securities, including, in the case of any
such transfer, the person acquiring all or substantially all of the properties
or assets of the Company, whether or not such person shall have expressly
assumed the terms of this Warrant as provided in Section 4. In the event this
Warrant does not continue in full force and effect after the consummation of the
transaction described in this Section 3, then only in such event will the
Company's securities and property (including cash, where applicable) receivable
by the Holder of the Warrants be delivered to the Trustee as contemplated by
Section 3.2.

                  3.4 Share Issuance. Until the Expiration Date, if the Company
shall issue any Common Stock except for the Excepted Issuances (as defined in
Section 11(a) of the Subscription Agreement), prior to the complete exercise of
this Warrant for a consideration less than the Purchase Price that would be in
effect at the time of such issue, then, and thereafter successively upon each
such issue, the Purchase Price shall be reduced to such other lower issue price.
For purposes of this adjustment, the issuance of any security or debt instrument
of the Company carrying the right to convert such security or debt instrument
into Common Stock or of any warrant, right or option to purchase Common Stock
shall result in an adjustment to the Purchase Price upon the issuance of the
above-described security, debt instrument, warrant, right, or option and again
at any time upon any subsequent issuances of shares of Common Stock upon
exercise of such conversion or purchase rights if such issuance is at a price
lower than the Purchase Price in effect upon such issuance. The reduction of the
Purchase Price described in this Section 3.4 is in addition to the other rights
of the Holder described in the Subscription Agreement.

         4. Extraordinary Events Regarding Common Stock. In the event that the
Company shall (a) issue additional shares of the Common Stock as a dividend or
other distribution on outstanding Common Stock, (b) subdivide its outstanding
shares of Common Stock, or (c) combine its outstanding shares of the Common
Stock into a smaller number of shares of the Common Stock, then, in each such
event, the Purchase Price shall, simultaneously with the happening of such
event, be adjusted by multiplying the then Purchase Price by a fraction, the
numerator of which shall be the number of shares of Common Stock outstanding
immediately prior to such event and the denominator of which shall be the number
of shares of Common Stock outstanding immediately after such event, and the
product so obtained shall thereafter be the Purchase Price then in effect. The
Purchase Price, as so adjusted, shall be readjusted in the same manner upon the
happening of any successive event or events described herein in this Section 4.
The number of shares of Common Stock that the Holder of this Warrant shall
thereafter, on the exercise hereof as provided in Section 1, be entitled to
receive shall be adjusted to a number determined by multiplying the number of
shares of Common Stock that would otherwise (but for the provisions of this
Section 4) be issuable on such exercise by a fraction of which (a) the numerator
is the Purchase Price that would otherwise (but for the provisions of this
Section 4) be in effect, and (b) the denominator is the Purchase Price in effect
on the date of such exercise.

                                       5
<PAGE>

         5. Certificate as to Adjustments. In each case of any adjustment or
readjustment in the shares of Common Stock (or Other Securities) issuable on the
exercise of the Warrants, the Company at its expense will promptly cause its
Chief Financial Officer or other appropriate designee to compute such adjustment
or readjustment in accordance with the terms of the Warrant and prepare a
certificate setting forth such adjustment or readjustment and showing in detail
the facts upon which such adjustment or readjustment is based, including a
statement of (a) the consideration received or receivable by the Company for any
additional shares of Common Stock (or Other Securities) issued or sold or deemed
to have been issued or sold, (b) the number of shares of Common Stock (or Other
Securities) outstanding or deemed to be outstanding, and (c) the Purchase Price
and the number of shares of Common Stock to be received upon exercise of this
Warrant, in effect immediately prior to such adjustment or readjustment and as
adjusted or readjusted as provided in this Warrant. The Company will forthwith
mail a copy of each such certificate to the Holder of the Warrant and any
Warrant Agent of the Company (appointed pursuant to Section 11 hereof).

         6. Reservation of Stock, etc. Issuable on Exercise of Warrant;
Financial Statements. The Company will at all times reserve and keep available,
solely for issuance and delivery on the exercise of the Warrants, all shares of
Common Stock (or Other Securities) from time to time issuable on the exercise of
the Warrant. This Warrant entitles the Holder hereof to receive copies of all
financial and other information distributed or required to be distributed to the
holders of the Company's Common Stock.

         7. Assignment; Exchange of Warrant. Subject to compliance with
applicable securities laws, this Warrant, and the rights evidenced hereby, may
be transferred by any registered holder hereof (a "Transferor"). On the
surrender for exchange of this Warrant, with the Transferor's endorsement in the
form of Exhibit B attached hereto (the "Transferor Endorsement Form") and
together with an opinion of counsel reasonably satisfactory to the Company that
the transfer of this Warrant will be in compliance with applicable securities
laws, the Company at its expense, twice, only, but with payment by the
Transferor of any applicable transfer taxes, will issue and deliver to or on the
order of the Transferor thereof a new Warrant or Warrants of like tenor, in the
name of the Transferor and/or the transferee(s) specified in such Transferor
Endorsement Form (each a "Transferee"), calling in the aggregate on the face or
faces thereof for the number of shares of Common Stock called for on the face or
faces of the Warrant so surrendered by the Transferor. No such transfers shall
result in a public distribution of the Warrant.

         8. Replacement of Warrant. On receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and, in the case of any such loss, theft or destruction of this
Warrant, on delivery of an indemnity agreement or security or bond reasonably
satisfactory in form and amount to the Company or, in the case of any such
mutilation, on surrender and cancellation of this Warrant, the Company at its
expense, twice only, will execute and deliver, in lieu thereof, a new Warrant of
like tenor.

         9. Registration Rights. The Holder of this Warrant has been granted
certain registration rights by the Company. These registration rights are set
forth in the Subscription Agreement. The terms of the Subscription Agreement are
incorporated herein by this reference. Upon the occurrence of a Non-Registration
Event, or in the event the Company is unable to issue Common Stock upon exercise
of this Warrant that has been registered in a Registration Statement described
in Section 11 of the Subscription Agreement, within the time periods described
in the Subscription Agreement, which Registration Statement must be effective
for the periods set forth in the Subscription Agreement, then upon written
demand made by the Holder, the Company will pay to the Holder of this Warrant,
in lieu of delivering Common Stock, a sum equal to the average of the closing
prices of the Company's Common Stock on the principal market or exchange upon
which the Common Stock is listed for trading for the five (5) trading days
immediately preceding the date notice is given by the Holder, less the Purchase
Price, for each share of Common Stock designated in such notice from the Holder.

                                       6
<PAGE>

         10. Maximum Exercise. The Holder shall not be entitled to exercise this
Warrant on an exercise date, in connection with that number of shares of Common
Stock which would be in excess of the sum of (i) the number of shares of Common
Stock beneficially owned by the Holder and its affiliates on an exercise date,
and (ii) the number of shares of Common Stock issuable upon the exercise of this
Warrant with respect to which the determination of this limitation is being made
on an exercise date, which would result in beneficial ownership by the Holder
and its affiliates of more than 4.99% of the outstanding shares of Common Stock
on such date. For the purposes of the immediately preceding sentence, beneficial
ownership shall be determined in accordance with Section 13(d) of the Securities
Exchange Act of 1934, as amended, and Regulation 13d-3 thereunder. Subject to
the foregoing, the Holder shall not be limited to aggregate exercises which
would result in the issuance of more than 4.99%. The restriction described in
this paragraph may be revoked upon sixty-one (61) days prior notice from the
Holder to the Company. The Holder may allocate which of the equity of the
Company deemed beneficially owned by the Subscriber shall be included in the
4.99% amount described above and which shall be allocated to the excess above
4.99%.

         11. Warrant Agent. The Company may, by written notice to the Holder of
the Warrant, appoint an agent (a "Warrant Agent") for the purpose of issuing
Common Stock (or Other Securities) on the exercise of this Warrant pursuant to
Section 1, exchanging this Warrant pursuant to Section 7, and replacing this
Warrant pursuant to Section 8, or any of the foregoing, and thereafter any such
issuance, exchange or replacement, as the case may be, shall be made at such
office by such Warrant Agent.

         12. Transfer on the Company's Books. Until this Warrant is transferred
on the books of the Company, the Company may treat the registered holder hereof
as the absolute owner hereof for all purposes, notwithstanding any notice to the
contrary.

         13. Notices. All notices, demands, requests, consents, approvals, and
other communications required or permitted hereunder shall be in writing and,
unless otherwise specified herein, shall be (i) personally served, (ii)
deposited in the mail, registered or certified, return receipt requested,
postage prepaid, (iii) delivered by reputable air courier service with charges
prepaid, or (iv) transmitted by hand delivery, telegram, or facsimile, addressed
as set forth below or to such other address as such party shall have specified
most recently by written notice. Any notice or other communication required or
permitted to be given hereunder shall be deemed effective (a) upon hand delivery
or delivery by facsimile, with accurate confirmation generated by the
transmitting facsimile machine, at the address or number designated below (if
delivered on a business day during normal business hours where such notice is to
be received), or the first business day following such delivery (if delivered
other than on a business day during normal business hours where such notice is
to be received) or (b) on the second business day following the date of mailing
by express courier service, fully prepaid, addressed to such address, or upon
actual receipt of such mailing, whichever shall first occur. The addresses for
such communications shall be: (i) if to the Company to: SiVault Systems, Inc.,
500 Fifth Avenue, Suite 1650, New York, NY 10110, Attn: Emilian Elferatos,
President & CEO, telecopier number: (212) 810-2427, with a copy by telecopier
only to: Thomas G. Amon, Esq., 500 Fifth Avenue, Suite 1650, New York, NY 10110,
telecopier number: (212) 810-2427, and (ii) if to the Holder, to the address and
telecopier number listed on the first paragraph of this Warrant, with a copy by
telecopier only to: Grushko & Mittman, P.C., 551 Fifth Avenue, Suite 1601, New
York, New York 10176, telecopier number: (212) 697-3575.



                                       7
<PAGE>


         14. Miscellaneous. This Warrant and any term hereof may be changed,
waived, discharged or terminated only by an instrument in writing signed by the
party against which enforcement of such change, waiver, discharge or termination
is sought. This Warrant shall be construed and enforced in accordance with and
governed by the laws of New York. Any dispute relating to this Warrant shall be
adjudicated in New York County in the State of New York. The headings in this
Warrant are for purposes of reference only, and shall not limit or otherwise
affect any of the terms hereof. The invalidity or unenforceability of any
provision hereof shall in no way affect the validity or enforceability of any
other provision.

         IN WITNESS WHEREOF, the Company has executed this Warrant as of the
date first written above.

                              SIVAULT SYSTEMS, INC.



                              By:
                                  -----------------------------
                                   Name:  Emilian Elferatos
                                   Title:  President and CEO



Witness:


-----------------------



                                       8
<PAGE>

                                    EXHIBIT A

                              FORM OF SUBSCRIPTION
                   (to be signed only on exercise of Warrant)

TO:  SIVAULT SYSTEMS, INC.

The undersigned, pursuant to the provisions set forth in the attached Warrant
(No.____), hereby irrevocably elects to purchase (check applicable box):

___ ________ shares of the Common Stock covered by such Warrant; or

___ the maximum number of shares of Common Stock covered by such Warrant
pursuant to the cashless exercise procedure set forth in Section 2.

The undersigned herewith makes payment of the full purchase price for such
shares at the price per share provided for in such Warrant, which is
$___________. Such payment takes the form of (check applicable box or boxes):

___      $__________ in lawful money of the United States; and/or

___      the  cancellation of such portion of the attached  Warrant as is
exercisable for a total of _______ shares of Common Stock (using a Fair
Market Value of $_______ per share for purposes of this calculation); and/or

___ the cancellation of such number of shares of Common Stock as is necessary,
in accordance with the formula set forth in Section 2, to exercise this Warrant
with respect to the maximum number of shares of Common Stock purchasable
pursuant to the cashless exercise procedure set forth in Section 2.

The undersigned requests that the certificates for such shares be issued in the
name of, and delivered to _____________________________________________________
whose address is ______________________________________________________________
_____________________________________________________________________________ .

The undersigned represents and warrants that all offers and sales by the
undersigned of the securities issuable upon exercise of the within Warrant shall
be made pursuant to registration of the Common Stock under the Securities Act of
1933, as amended (the "Securities Act"), or pursuant to an exemption from
registration under the Securities Act.

Dated:___________________        _________________________________________
                                 (Signature must conform to name of holder as
                                 specified on the face of the Warrant)

                                 _________________________________________

                                 _________________________________________
                                 (Address)


                                       9
<PAGE>

                                    EXHIBIT B


                         FORM OF TRANSFEROR ENDORSEMENT
                   (To be signed only on transfer of Warrant)

                  For value received, the undersigned hereby sells, assigns, and
transfers unto the person(s) named below under the heading "Transferees" the
right represented by the within Warrant to purchase the percentage and number of
shares of Common Stock of SIVAULT SYSTEMS, INC. to which the within Warrant
relates specified under the headings "Percentage Transferred" and "Number
Transferred," respectively, opposite the name(s) of such person(s) and appoints
each such person Attorney to transfer its respective right on the books of
SIVAULT SYSTEMS, INC. with full power of substitution in the premises.


--------------------- -------------------------- ---------------------------
Transferees           Percentage Transferred     Number Transferred
--------------------- -------------------------- ---------------------------

--------------------- -------------------------- ---------------------------

--------------------- -------------------------- ---------------------------

--------------------- -------------------------- ---------------------------


Dated:  ______________, ___________
                                       _________________________________________
                                       (Signature must conform to name of holder
                                       as specified on the face of the warrant)

Signed in the presence of:

____________________________________    ________________________________________
         (Name)
                                        ________________________________________
                                             (address)

ACCEPTED AND AGREED:
[TRANSFEREE]
                                        ________________________________________

                                        ________________________________________
                                              (address)

____________________________________
         (Name)