TRUST AGREEMENT

          This Trust Agreement (the “Agreement ”) of the Digital Angel Share
Trust, a Delaware statutory business trust (the “Trust”) is made and entered
into as of March 1, 2002, between Wilmington Trust Company, a Delaware banking
corporation (acting hereunder not in its individual capacity but solely as
trustee hereunder, the “Trustee”), and Applied Digital Solutions, Inc., a
corporation organized under the laws of Missouri (“ADS”).

RECITALS

          A.  Pursuant to the Credit Agreement, the Trust has agreed to assume
from ADS and certain of its Affiliates the obligation to pay IBM Credit
Corporation, a Delaware corporation (“IBM Credit”), certain indebtedness.

          B.  In consideration of such assumption, and in order to secure and
facilitate the payment of the Obligations according to their terms, ADS has
agreed to deposit with the Trustee the MAS Stock, to be held in trust hereunder
on the terms and conditions set forth herein.

AGREEMENT

          NOW THEREFORE, in consideration of the premises and the mutual
covenants herein contained, the parties hereto hereby agree as follows:

ARTICLE I.

DEFINITIONS

          “Act” means the Delaware Business Trust Act, 12 Del. C. §§3801 et seq.

          “ADS” is defined in the introductory paragraph of this Agreement.

          “ADS Designated Advisory Board Member” is defined in Section 4.01(b).

          “Advisory Board” means the Advisory Board prescribed by Section 4.01.

          “Advisory Board Members” means the members of the Advisory Board.

          “Affiliate” of any Person means a Person that, directly or indirectly,
through one or more intermediaries, controls, is controlled by or is under
common control with the first mentioned Person. A Person shall be deemed to
control another Person if such first Person possesses directly or indirectly the
power to direct, or cause the direction of, the management and policies of the
second Person, whether through the ownership of voting securities, by contract
or otherwise.

          “Bankruptcy Decision” means, with respect to a specified entity, any
of the following actions: (a) filing any voluntary petition in bankruptcy on
behalf of such entity, (b) consenting to the filing of any involuntary petition
in bankruptcy against such entity, (c) filing any petition seeking, or
consenting to, reorganization or relief under any applicable federal, state or
foreign law relating to bankruptcy or insolvency, on behalf of such entity, (d)
consenting to the appointment of a receiver, liquidator, assignee, trustee,
sequestrator (or other similar official) of such entity or a substantial part of
the property of such entity, (e) making any assignment for the benefit of
creditors on behalf of such entity, (f) admitting in writing the inability of
such entity to pay its debts generally as they become due, or (g) taking any
action by such entity in furtherance of any of the foregoing actions.

          “Certificate of Trust” means the Certificate of Trust of the Trust
filed under the Act with the Delaware Secretary of State on March 1, 2002, as
such Certificate of Trust may be amended or restated from time to time.

          “Credit Agreement” means that certain Third Amended and Restated Term
Credit Agreement of even date herewith, among IBM Credit, the Trust and ADS.

          “Closing Date” is defined in the Credit Agreement.

          “Credit Documents” means the Credit Agreement, the Guarantee (as
defined in the Credit Agreement), and any security agreements, leases,
instruments, documents, guarantees, schedules of assignment, contracts and
similar agreements, including schedules, attachments, exhibits and ancillary
documentation or other supporting documents, executed by or on behalf of each
Borrower (as defined in the Credit Agreement), or any other Loan Party (as
defined in the Credit Agreement), and delivered to Lender (as defined in the
Credit Agreement), pursuant to the Credit Agreement or otherwise, and all amend
ments, supplements and other modifications to the foregoing from time to time.

          “Delaware Secretary of State” means the office of the Secretary of
State of the State of Delaware.

          “Fair Market Value” means, on any date specified, the average of the
daily Market Price of a share of MAS Stock during the 10 consecutive trading
days before such date, except that, if on any such date the shares of MAS Stock
are not listed or admitted for trading on any national securities exchange or
quoted in the over-the-counter market, Fair Market Value shall be the Market
Price on such date.

          “Final Payment Date” means the date on which all Obligations have been
paid and satisfied in full.

          “Final Payment Notice” means the written notice from IBM Credit to the
Trustee stating tha t the Final Payment Date has occurred.

          “IBM Credit” is defined in Recital A.

          “Indemnified Trustee Person(s)” is defined in Section 6.06.

          “Independent Advisory Board Member” means (i) a Person who is not at
the time of initial appointment, or at any time while serving as an Advisory
Board Member, and has not been at any time during the preceding five years: (a)
a stockholder, director, officer, employee, partner, attorney or counsel of MAS,
ADS, IBM Credit or any of their respective Affiliates; (b) a customer, supplier
or other person who derives any of its purchases or revenues from its activities
with MAS, ADS, IBM Credit or any of their respective Affiliates; (c) a Person or
other entity controlling or under common control with any such stockholder,
partner, customer, supplier or other person; or (d) a member of the immediate
family of any such stockholder, director, officer, employee, partner, customer,
supplier or other person and (ii) a Person who at the time of initial
appointment as an Advisory Board Member: (a) is financially literate; (b) has
accounting or financial management expertise; and (c) has no less than ten years
of business experience, at least some of which is with a public company or
involving public company matters.

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          “Market Price” means, on any date specified, an amount per share of
MAS Stock equal to (i) the last reported sale price of such MAS Stock, regular
way, on such date or, in case no such sale takes place on such date, the average
of the closing bid and asked prices thereof regular way on such date, in either
case as officially reported on the principal national securities exchange on
which such MAS Stock is then listed or admitted for trading, (ii) if such MAS
Stock is not then listed or admitted for trading on any national securities
exchange but is designated as a national market system security by the NASD, the
last reported trading price of the MAS Stock on such date, (iii) if there shall
have been no trading on such date or if the MAS Stock is not so designated, the
average of the closing bid and asked prices of the MAS Stock on such date as
shown by the NASD automated quotation system, or (iv) if such MAS Stock is not
then listed or admitted for trading on any national exchange or quoted in the
over-the-counter market, the fair value thereof (as of a date which is within 10
days of the date as of which the determination is to be made) determined in good
faith by the Board of Directors of the issuer of such MAS Stock.

          “MAS” means Medical Advisory Systems, Inc., a Delaware corporation.

          “MAS Stock” means the common stock, par value $.005 per share, of MAS,
and any stock into which such common stock shall have been changed, any stock
resulting from any reclassification of such common stock, any other shares of
stock issued or issuable with respect thereto (whether by way of a stock
dividend or stock split or in exchange for or upon conversion of such shares or
otherwise in connection with a combination of shares, recapitalization, merger,
consolidation or other corporate reorganiza tion), and all other stock of any
class or classes (however designated) of MAS (or its successors) the holders of
which have the right, without limitation as to amount, either to all or to a
share of the balance of current dividends or liquidating dividend s after the
payment of dividends and distributions on any shares entitled to preference.

          “Merger Agreement” means that Agreement and Plan of Merger by and
among ADS, Digital Angel Corporation, a Delaware corporation, MAS, and
Acquisition Subsidiary, Inc., a Delaware corporation, dated as of November 1,
2001.

          “Obligations” means the Obligations (as defined in the Credit
Agreement) of the Trust under the Credit Documents.

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          “Person” means an individual, a corporation, an association, a
partnership, an estate, a trust, a limited liability company and any other
entity or organization, governmental or otherwise.

          “Registration Rights Agreement” means that certain Registration Rights
Agreement between MAS and ADS, attached as an exhibit to the Merger Agreement
and attached hereto as Exhibit A.

          “Required Amount of Cash” means (a) the Trigger Amount or such other
amount as is then due and payable by the Trust under the Credit Documents, minus
(b) the amount of cash then in the Trust Estate, plus (c) the costs of
liquidating sufficient shares of MAS Stock held in the Trust Estate to generate
net proceeds equal to the amount produced by subtracting clause (b) from clause
(a).

          “Trigger Amount” means the amount stated in a Trigger Notice as owed
but not timely paid by the Trust under the Credit Documents.

          “Trigger Event” means any payment default by the Trust under the
Credit Documents.

          “Trigger Notice” means a written notice from IBM Credit to the Trustee
stating that there has been and is continuing a Trigger Event, specifying the
Trigger Amount.

          “Trust” means the Delaware statutory business trust formed pursuant to
this Agreement and known as “Digital Angel Share Trust,” which was formed as of
March 1, 2002, under the Act pursuant to the filing of the Certificate of Trust.

          “Trustee” means Wilmington Trust Company, not in its individual
capacity, but solely as a trustee hereunder, and any successor trustee appointed
in accordance with Section 3807 of the Act and Section 6.04.

          “Trust Estate” is defined in Article III.

ARTICLE II.

GENERAL

          Section 2.01.  Formation of the Trust.

          (a)  The Trust created hereby shall be known as “Digital Angel Share
Trust,” in which name the Trustee may conduct the affairs of the Trust, make and
execute contracts and other instruments on behalf of the Trust and sue and be
sued on behalf of the Trust. ADS hereby appoints Wilmington Trust Company as
trustee of the Trust effective as of the date hereof, to have all the rights,
powers and duties set forth herein and in the Act. Wilmington Trust Company
hereby agrees to hold the Trust Estate as Trustee on behalf of the Trust upon
the terms and conditions set forth herein. The Trustee is hereby authorized to
file the Certificate of Trust with the Delaware Secretary of State pursuant to
Section 3810 of the Act.

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          (b)  It is the intention of the parties hereto that the Trust
constitute a business trust under the Act and that this Trust Agreement
constitute the governing instrument of the Trust. Effective as of the date
hereof, the Trustee shall have all rights, powers and duties set forth herein
and in the Act with respect to accomplishing the purposes of the Trust.

          Section 2.02.   Name, Principal Office, and Name and Address of
Trustee as Agent for Service of Process.

           (a)  The principal place of business and office of the Trust shall be
c/o Wilmington Trust Company, Rodney Square North, 1100 North Market Street,
Wilmington, DE 19890-0001, Attention: Corporate Trust Administration. The
Trustee is hereby designated to accept service of process on behalf of the Trust
at the address provided in the preceding sentence. The Trustee may change the
address set forth in this Section 2.02 upon written notice to each Advisory
Board Member.

          (b)  The Trust shall be located and administered in, and all bank
accounts of the Trust maintained in, the State of Delaware. Payments shall be
received by the Trust only in the State of Delaware and payments will be made by
the Trust only from the State of Delaware.

          Section 2.03.   Purpose. The purpose of the Trust is to own, vote
(subject to Section 4.04) and dispose of the Trust Estate as directed in writing
by the Advisory Board and with the ultimate objective of securing and
facilitating the repayment and satisfaction of the Obligations in accordance
with the terms and conditions of the Credit Documents. In furtherance of such
purpose, the Trust shall enter into and exercise all of its rights and perform
all of its obligations under the Credit Documents, this Agreement and any other
agreement, document or instrument necessary or incidental thereto, and shall
make all filings required under Federal securities laws or otherwise in
connection with its ownership of the MAS Stock held in the Trust Estate. The
Trust will not conduct activities other than those contemplated by this Section
2.03, and, except as required in furtherance of its purpose, the Trust shall
not: (i) have any property, rights or interests, whether real or personal,
tangible or intangible, (ii) incur any legal liability or obligation, whether
fixed or contingent, matured or unmatured, or (iii) subject any of the Trust
Estate to any mortgage, lien, security interest or other claim or encumbrance.

          Section 2.04.   Certain Covenants Relating to the Separateness of the
Trust. The Trust shall maintain its separate existence and, specifically, shall
conduct its affairs in accordance with, and ADS agrees that it will not take any
actions in its dealings with the Trust or with other Persons (including
creditors of ADS) that are inconsistent with, the following:

          (a)  The Trust shall maintain its books, records and bank accounts
separate from those of any other Person.

          (b)  The Trust shall not commingle or pool any of its funds or other
assets with those of any other Person, and it shall, through the Trustee, hold
all of its assets in its own name.

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          (c)  The Trust, through the Trustee, shall conduct its own business in
its own name and shall not operate, or purport to operate, collectively as a
single or consolidated business entity with respect to any Person.

          (d)  The Trust has done, or caused to be done, and shall do, all
things necessary to observe all Delaware statutory business trus t formalities
and other organizational formalities, and preserve its existence (subject to
Article VII and the other express provisions hereof), and it shall not, nor will
it permit any Affiliate or constituent party to, amend, modify or otherwise
change this Agreement in a manner which would adversely affect the existence of
the Trust as a special purpose entity.

          (e)  The Trust shall not have any employees.

          (f)  Except pursuant to the Credit Documents, the Trust does not, and
shall not, (i) guarantee, become obligated for, or hold itself or its credit out
to be responsible for or available to satisfy, the debts or obligations of any
other Person or (ii) control the decisions or actions respecting the daily
business or affairs of any other Person.

          (g)  The Trust shall, at all times, hold itself out to the public as
an entity separate and distinct from any other Person and shall correct any
known misunderstanding regarding its separate identity.

          (h)  The Trust shall not identify itself as a division or agent of any
other Person.

          (i)  The Trust shall maintain its assets in such a manner that it will
not be costly or difficult to segregate, ascertain or identify its individual
assets from those of any other Person.

          (j)  The Trust shall not use its separate existence to abuse creditors
or to perpetrate a fraud, injury, or injustice on creditors in violation of
applicable law.

          (k)  The Trust shall not be consensually merged or legally
consolidated with any other Person.

          Section 2.05.   Creditors of ADS. Except pursuant to the Credit
Documents, to the fullest extent permitted by applicable law, no creditor of ADS
or any of its Affiliates shall have any right to obtain possession of, or
otherwise exercise legal or equitable remedies with respect to, the Trust
Estate.

ARTICLE III.

CONTRIBUTION

          Section 3.01.   Assignment. On the Closing Date, ADS shall execute and
deliver to the Trustee on behalf of the Trust an assignment in the form attached
hereto as Exhibit B (the “Assignment”), by which ADS shall (a) sell, assign,
transfer, convey and set over to the Trust all of its right, title and interest
in 19,600,000 shares of MAS Stock, which is all of the MAS Stock owned by ADS,
and (b) assign to the Trust all of its rights under the Registration Rights
Agreement. The Trustee shall acknowledge receipt of the Assignment, which shall
constitute the initial trust estate (including all income on and proceeds of
such initial trust estate, the “Trust Estate”). The Trustee hereby declares that
it will hold the Trust Estate in trust on the terms and conditions set forth
herein.

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          Section 3.02.   Legal Title to Trust Property. Legal title to the
Trust Estate shall be vested at all times in the Trust as a separate legal
entity except where applicable law in any jurisdiction requires title to any
part of the Trust Estate to be vested in a trustee or trustees, in which case
legal title shall be deemed to be vested in the Trustee, a co-trustee and/or a
separate trustee, as the case may be.

          Section 3.03.   Beneficial Owner. ADS shall be deemed to be the
beneficial owner of the Trust Estate.

ARTICLE IV.

TRUST GOVERNANCE

          Section 4.01.   Advisory Board.

          (a)  General. The Trustee shall act upon and in accordance with this
Agreement and the written instructions of the Advisory Board, which shall
consist of three individuals, selected as described in Section 4.01(b). Each
Advisory Board Member shall serve until his or her death, resignation or
removal. An Advisory Board Member other than the ADS Designated Advisory Board
Member may only be removed by the other two Advisory Board Members for “cause.”
The ADS Designated Advisory Board Member may be removed either by the other two
Advisory Board Members for “cause” or by ADS as provided in paragraph (c) below.
For purposes of this Section 4.01, “cause” to remove an Advisory Board Member
other than the ADS Designated Advisory Board Member shall only exist upon the
occurrence of any of the following events or conditions:

            (i)  the Advisory Board Member shall be convicted of (or shall plead
nolo contendere to) a felony crime;

          (ii)  the Advisory Board Member shall misappropriate or misuse any
funds or property of the Trust or engage in any material act of dishonesty;

          (iii)  the Advisory Board Member shall attempt to obtain personal
enrichment at the expense of the Trust or from any transaction in which the
Advisory Board Member has an interest adverse to the interest of the Trust,
unless the Advisory Board Member shall have obtained the prior written consent
of the other Advisory Board Members;

          (iv)  the Advisory Board Member shall cease to meet the definition of
an Independent Advisory Board Member; or

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            (v)  the Advisory Board Member shall disregard or fail (for reasons
other than disability or death) to perform any of his material functions or
duties to the Trust.

“Cause” to remove the ADS Designated Advisory Board Member shall only exist upon
the occurrence of the events or conditions in clauses (i) through (iii). A
removal pursuant to any of clauses (i) through (iv) shall be effective
immediately upon written notice to the Advisory Board Member by the other
Advisory Board Members. Upon the happening of an event or occurrence described
in clause (v) above, before the other Advisory Board Members may remove the
Advisory Board Member in question, that Advisory Board Member shall have first
received written notice from the other Advisory Board Members stating, with
specificity, the nature of such failure and affording him not less than ten
business days to correct the acts or omissions specified. The notice and cure
provisions of this paragraph shall not apply, however, to a failure which cannot
be cured.

          (b)   Initial Selection. The initial Independent Advisory Board
Members shall be selected from a list of candidates to be provided by the
American Arbitration Association (the “AAA”) pursuant to a memorandum from ADS
and IBM Credit dated February 27, 2002. Upon receipt of the list of candidates
from the AAA, the Trust shall provide a slate of ten candidates to each of IBM
Credit and ADS. Such slate of ten candidates shall consist of the first ten
names on the list provided by the AAA. Within five business days after receipt
of the initial slate from the Trust, IBM Credit and ADS shall notify the Trustee
and the other of which three candidates it chooses to strike from the slate. The
Trustee shall then promptly select two of the remaining candidates for
appointment on the basis of which candidate is willing to serve for the least
amount of compensation. If the candidates are not distinguishable on the basis
of lowest required compensation, the Trustee shall select the initial
Independent Advisory Board Members arbitrarily. Prior to final selection of the
initial Independent Advisory Board Members, the Trustee shall obtain a
certificate from each selected candidate that he or she qualifies as an
Independent Advisory Board Member. The third initial Advisory Board Members
shall be designated by ADS (the “ADS Designated Advisory Board Member”). ADS
hereby designates Richard J. Sullivan as the initial ADS Designated Advisory
Board Member.

          (c)   Replacements. In the event there should be a vacancy on the
Advisory Board, other than that of the ADS Designated Advisory Board Member, the
Trustee shall select each new Advisory Board Member by the following procedure.
The Trustee shall promptly propose a slate of five Advisory Board candidates,
which candidates the Trustee shall request the AAA to provide. The Trustee shall
provide the slate of candidates to each of IBM Credit and ADS, and IBM Credit
and ADS shall, within five business days thereafter, notify the Trustee and the
other which candidate it chooses to strike from the slate. The Trustee shall
then promptly select one of the rema ining candidates for appointment on the
basis of which candidate is willing to serve for the least amount of
compensation. If none of the candidates is distinguishable on the basis of
lowest required compensation, the Trustee shall select the new Advisory Board
Member arbitrarily from among the two or more candidates requiring the least
compensation. Prior to final selection of the new Advisory Board Member, the
Trustee must receive a certificate from the candidate that he or she qualifies
as an Independent Advisory Board Member. The foregoing procedure shall be
repeated until all vacant Advisory Board Member positions, other than that of
the ADS Designated Advisory Board Member, are filled. ADS shall replace the ADS
Designated Advisory Board Member upon his or her removal, death or resignation,
and may replace the ADS Designated Advisory Board Member with another designee
at any time with or without cause upon written notice to the other Advisory
Board Members and the Trustee.

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          (d)   Meetings. The Advisory Board shall meet no less frequently than
quarterly, on such regular date and at such place as may from time to time be
determined by the Advisory Board. Additional meetings of the Advisory Board may
be held upon no less than two business days’ written notice by one or more
Advisory Board Member(s) to the other Advisory Board Member(s). At all meetings
of the Advisory Board, two Advisory Board Members then in office will constitute
a quorum for the transaction of business. Except as otherwise provided in
Section 4.02, the act of a majority of the Advisory Board Members present at any
meeting at which there is a quorum will be the act of the Advisory Board. If a
quorum is not present at any meeting of the Advisory Board, the Advisory Board
Members present thereat may adjourn the meeting from time to time to another
place, time, or date, without notice other than announcement at the meeting,
until a quorum is present.

          (e)   Action by Written Consent. Any action required or permitted to
be taken at any meeting of the Advisory Board may be taken without a meeting if
the requisite number of Advisory Board Members consents thereto in writing, and
the writing or writings are filed with the minutes or proceedings of the
Advisory Board and provided to the non-consenting Advisory Board Member (if any)
within two business days after such written consent.

          (f)   Participation in Meetings by Telephone Conference. Advisory
Board Members may participate in a meeting of the Advisory Board by means of
telephone conference or similar means by which all persons participating in the
meeting can hear each other, and such participation in a meeting will constitute
presence in person at the meeting.

          (g)  Compensation. All Advisory Board compensation and expense
reimbursement shall be paid by ADS promptly upon written request by the Trustee
therefor or, in the absence of such payment, from the Trust Estate.

          (h)   Advisory Board Member Liability. To the full extent permitted by
applicable law currently or hereafter in effect, no Advisory Board Member will
be personally liable, for breach of fiduciary duty or otherwise, to the Trust,
the Trustee, IBM Credit or ADS for or with respect to any acts or omissions in
the performance of his or her duties as an Advisory Board Member. No repeal or
modification of this Section 4.01(h) will adversely affect any right or
protection of an Advisory Board Member existing prior to such repeal or
modification.

          (h)   Indemnification. Each person who is or was or had agreed to
become an Advisory Board Member will be indemnified by the Trust to the full
extent permitted by applicable law as currently or hereafter in effect and will
be entitled to advancement of expenses in connection therewith. The right of
indemnification and of advancement of expenses provided in this Section 4.01(i):
(i) will not be exclusive of any other rights to which any Person seeking
indemnification or advancement of expenses may otherwise be entitled, including
without limitation pursuant to any contract approved by a majority of all
Advisory Board Members (whether or not the Advisory Board Members approving such
contract are or are to be parties to such contract or similar contracts), and
(ii) will be applicable to matters otherwise within its scope whether or not
such matters arose or arise before or after the date of this Agreement. Any
amendment or repeal of, or addition of any provision inconsistent with, this
Section 4.01(i) will not adversely affect any right or protection existing
hereunder, or arising out of the facts occurring, prior to such amendment,
repeal, or adoption and no such amendment, repeal, or adoption will affect the
legality, validity, or enforceability of any contract entered into or right
granted prior to the effective date of such amendment, repeal, or adoption. If
so determined by the Advisory Board, the Trust may obtain insurance to support
its indemnification obligations hereunder, the cost of which shall be paid from
the Trust Estate.

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          Section 4.02.   Major Decisions. The following actions shall require
the unanimous vote of the Advisory Board Members:

          (a)  (i)   filing any voluntary petition in bankruptcy on behalf of
the Trust, (ii) consenting to the filing of any involuntary petition in
bankruptcy against the Trust, (iii) filing any petition seeking, or consenting
to, reorganization or relief under any applicable federal, state or foreign law
relating to bankruptcy or insolvency, on behalf of the Trust, (iv) consenting to
the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or
other similar official) of the Trust or a substantial part of the property of
the Trust, (v) making any assignment for the benefit of creditors on behalf of
the Trust, (vi) admitting in writing the Trust’s inability to pay its debts
generally as they become due, or (vii) taking any action by the Trust in
furtherance of any of the foregoing actions;

          (b)  determining to liquidate or dissolve the Trust;

          (c)  approving the merger, consolidation, sale or transfer of all or a
substantial amount of assets or other change in control transaction involving
the Trust, provided that in no event may any of the aforementioned activities
occur with any entity that may seek bankruptcy protection or if such merger,
consolidation, sale or transfer would undermine the solvency of the Trust;

          (d)  except as permitted or required pursuant to Article V, approving
the payment or making of any distributions from the Trust;

          (e)  approving amendments to the constituent documents of the Trust or
the Credit Documents; or

          (f)  voting the MAS Stock in favor of a Bankruptcy Decision with
respect to MAS or any of its direct or indirect subsidiaries if, at the time
such Bankruptcy Decision is implemented or is to be implemented, (i) a
Bankruptcy Decision has been made with respect to ADS or any of its direct or
indirect subsidiaries, or (ii) any borrower under the Credit Documents is in
default under or with respect to any obligation for borrowed money, including
the Credit Documents, regardless of whether such default has been declared.

          Section 4.03.   Charter Amendment. On the Closing Date, the Trustee
shall execute and deliver to the Secretary of MAS, on behalf of the Trust as the
majority shareholder of MAS, the Action by Written Consent attached hereto as
Exhibit C, together with instructions to the Secretary of MAS directing him or
her to execute and file with the Delaware Secretary of State the Amendment to
the Certificate of Incorporation of MAS attached to such Action by Written
Consent.

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          Section 4.04.   Voting Rights with Respect to the MAS Stock. Except as
otherwise specified in this Section, prior to such time as the MAS Stock has
been sold or otherwise released by the Trust, the Trustee shall exercise the
right to vote such MAS Stock as instructed in writing by the Advisory Board in
accordance with the terms hereof. After delivery of the Final Payment Notice,
ADS shall have the right to direct the Trustee with respect to the voting of all
MAS Stock then in the Trust Estate.

ARTICLE V.

MAS STOCK LIQUIDATIONS; FINAL DISTRIBUTION

          Section 5.01.   MAS Stock Liquidations. From time to time, when any
sums are due and payable under the Credit Documents, including upon receipt of a
Trigger Notice, the Trustee shall promptly take action to liquidate the amount
of MAS Stock held in the Trust Estate required in order to generate the Required
Amount of Cash. Such action may include the sale of some or all of the MAS Stock
held in the Trust Estate in private transactions or on a national stock exchange
or quotation system, utilizing the registration rights available pursuant to the
Registration Rights Agreement where necessary. In effecting such sale(s) of MAS
Stock, the Trustee will request that IBM Credit release a sufficient number of
shares of MAS Stock to facilitate such sale and will endeavor not to sell shares
of MAS Stock in a manner which would disrupt an orderly market or is reasonably
likely to have an adverse impact on the market price of MAS Stock and will use
commercially reasonable efforts to maximize the per share value realized for
such MAS Stock. From the proceeds of such MAS Stock liquidations and all other
cash then held in the Trust Estate, the Trustee shall (i) pay the fees and
expenses incurred by it in accomplishing such liquidations, and (ii) distribute
to IBM Credit the amounts due and payable under the Credit Documents. Any excess
proceeds shall remain in the Trust Estate.

          Section 5.02.   Final Distribution. Upon receipt of the Final Payment
Notice, the Trust shall be dissolved pursuant to Article VII.

          Section 5.03.   Trust Expenses. In the event ADS fails to pay the
compensation or reimbursement due the Advisory Board Members pursuant to Section
4.01(g), any indemnification amount or expense advance payable pursuant to
Section 4.01(i), the Trustee’s fees and expenses as provided in Section 6.07, or
any indemnification amount payable pursuant to Section 6.06 within five business
days after demand, the Trustee is hereby authorized to liquidate such amount of
MAS Stock held in the Trust Estate as is necessary to pay such amounts.
Alternatively, IBM Credit may advance payment in satisfaction of such amounts
and add such amounts to the Obligations. Payment in satisfaction of the
Trustee's fees and expenses as provided in Section 6.07 shall be made in full
prior to any other payment or distribution permitted or required hereunder.

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ARTICLE VI.

CONCERNING THE TRUSTEE

          Section 6.01.  General.

          (a)  In the exercise or administration of the Trust hereunder, the
Trustee, at the expense of ADS (paid as specified in Section 6.07), may (i) act
directly or through agents or attorneys pursuant to agreements entered into with
any of them, and the Trustee shall not be liable for the default or misconduct
of such agents or attorne ys if such agents or attorneys shall have been
selected by the Trustee with reasonable care; and (ii) consult with counsel,
accountants and other skilled Persons to be selected with reasonable care and
employed by the Trustee, and it shall not be liable for anything done, suffered
or omitted in good faith by it in accordance with the advice or opinion of any
such counsel, accountants or other skilled Persons if such advice or opinion
pertains to such matters as the Trustee may reasonably presume to be within the
scope of such counsel’s, accountant’s or other skilled Person’s area of
expertise.

          (b)  Except as expressly provided herein, (i) in accepting the Trust
hereby created, Wilmington Trust Company acts solely as Trustee hereunder and
not in its individual capacity, and (ii) all Persons having any claim against
the Trustee or the Trust by reason of the transactions contemplated by this
Agreement shall look only to the Trust’s property for payment or satisfaction
thereof.

          (c)  The Trustee will administer the business and affairs of the Trust
in accordance with the terms of the Act and this Agreement; provided, however,
that the Trustee undertakes to perform only such duties as are specifically set
forth in this Agreement and as the Trustee may be duly directed from time to
time in writing by the appropriate parties specified herein. The Trustee shall
not have any duty or obligation to manage, control, use, sell, dispose of or
otherwise deal with the Trust or to otherwise take or refrain from taking any
action under this Agreement except as expressly required by the terms hereof or
as expressly provided in written instructions from the appropriate parties
specified herein, and no implied duties or obligations shall be read into this
Agreement against the Trustee. Wilmington Trust Company nevertheless agrees that
it will, at its own cost and expense (and not at the expense of the Trust),
promptly take all action as may be necessary to discharge any liens on any part
of the Trust Estate which are attributable to actions by or claims against
Wilmington Trust Company that are not related to the ownership of any part of
the Trust Estate or the administration of the Trust Estate or the transactions
contemplated by this Agreement.

          (d)  The Trustee shall not be required to take any action under this
Agreement if the Trustee shall reasonably determine or shall have been advised
by counsel that such action is contrary to the terms of this Agreement or is
otherwise contrary to applicable law.

          (e)  Whenever the Trustee is unable to decide between alternative
courses of action permitted or required by the terms of this Agreement, or is
unsure as to the application, intent, interpretation or meaning of any provision
hereof, the Trustee may give notice (in such form as shall be appropriate under
the circumstances) to the Advisory Board Members requesting written instructions
as to the course of action to be adopted, and, to the extent the Trustee acts in
good faith in accordance with any such appropriate instruction received, the
Trustee shall not be liable on account of such action or inaction to any Person.
If the Trustee shall not have received appropriate instructions within ten days
of such notice (or within such shorter period of time as reasonably may be
specified in such notice or may be necessary under the circumstances), it may,
but shall be under no duty to, take or refrain from taking such action which is
consistent, in its view, with this Agreement and the Trust’s purpose (as set
forth in Section 2.03), and the Trustee shall have no liability to any Person
for any such action or inaction.

-12-

          (f)  In no event whatsoever shall the Trustee be liable for any
representation, warranty, covenant, agreement, indebtedness or other obligation
of the Trust; provided, however, the foregoing shall in no event whatsoever
relieve the Trustee from any liability resulting from the Trustee’s bad faith,
willful misconduct or gross negligence.

          (g)  The Trustee may rely upon and shall incur no liability to anyone
in acting upon any signature, instrument, notice, resolutio n, request, consent,
order, certificate, report, opinion, bond or other document or paper reasonably
believed by it to be genuine and reasonably believed by it to be signed by the
proper party or parties. The Trustee may accept a certified copy of a resolution
of the board of directors or other governing body of any Person as conclusive
evidence that such resolution has been duly adopted by such body and that the
same is in full force and effect. As to any fact or matter the manner of
ascertainment of which is not specifically prescribed herein, the Trustee may
for all purposes hereof rely on a certificate, signed by the president or any
vice president or by the treasurer or any assistant treasurer or the secretary
or any assistant secretary or any trust officer (or equivalent position) of the
relevant party, as to such fact or matter, and such certificate shall constitute
full protection to the Trustee for any action taken or omitted to be taken by it
in good faith reliance thereon.

          (h)  The Trustee shall not be required to take any action that is
inconsistent with the purposes of the Trust set forth in Section 2.03.

          (i)  The Trustee shall not have any responsibility or liability for or
with respect to the genuineness, value, sufficiency or validity of the Trust
Estate. The Trustee shall in no event assume or incur any liability, duty or
obligation to any Person other than as expressly provided for herein, and in no
event shall the Trustee have any implied duties or obligations hereunder.

          (j)  The Trustee shall incur no liability if, by reason of any
provision of any future law or regulation thereunder, the Trustee shall be
prevented or forbidden from doing or performing any act or thing which the terms
of this Agreement provide shall or may be done or performed.

          (k)  No provision of this Agreement shall require the Trustee to
expend or risk its personal funds, or otherwise incur any financial liability in
the performance of its rights or powers hereunder, if the Trustee shall have
reasonable grounds for believing that repayment of such funds or adequate
indemnity against such risk or liability is not reasonably assured or provided
to it.

-13-

          (l)  The Trustee shall not be liable for the default or misconduct of
the Advisory Board and shall not be liable for any act or omission taken at the
direction of the Advisory Board.

          (m)  Every provision of this Agreement relating to the Trustee shall
be subject to the provisions of this Section 6.01.

          Section 6.02.   Acceptance of the Trust. The Trustee declares that it
accepts the trust created hereunder and agrees to perform its duties under this
Agreement and the Act but only upon the terms of this Agreement.

          Section 6.03.   Authority and Duties of the Trustee.

          (a)  The Trustee is authorized and directed to execute and deliver
this Agreement, and to execute and deliver on behalf of the Trust, the Credit
Documents and any other document or instrument attached as an Exhibit to,
contemplated by, or necessary or incidental hereto, in such form as the Advisory
Board shall approve, as evidenced conclusively by the Trustee’s execution
thereof. The execution and delivery of, and performance of the terms of any
other document or instrument necessary or incidental hereto shall be deemed not
to conflict with or constitute a breach or default under this Agreement. The
Trustee shall have only such authority and shall perform such duties as are
expressly set forth in this Agreement.

          (b)  Upon the written instruction of the appropriate party specified
herein, the Trustee shall execute, acknowledge, deliver, file or record any
document or instrument necessary or appropriate to carry out the provisions of
this Agreement in such form as is provided to it.

          (c)  The Trustee shall have the power and authority to execute,
deliver, acknowledge and file all necessary documents and to maintain all
necessary records of the Trust as required by the Act.

          (d)  In the performance of its duties under this Agreement, the
Trustee may rely on any document believed by it to be genuine and to have been
signed or presented by the proper Person. The Trustee need not investigate any
fact or matter stated in any such document, but the Trustee, in its discretion,
may make further inquiry or investigation.

          (e)  The Trustee shall cause to be prepared and filed such securities
law and tax filings and returns relating to the Trust, and shall make such tax
elections as may from time to time be required or appropriate under any
applicable Federal, state or local tax statute or rule or regulation thereunder,
in accordance with the Advisory Board’s written instructions; provided that the
Trustee shall not make any tax elections with respect to the Trust that are
inconsistent with the income tax characterization of the Trust as stated in
Section 9.06.

          (f)  Subject to the provisions of any applicable confidentiality
agreement to which the Trust is or becomes a party, the Trustee shall furnish to
the Advisory Board, promptly upon receipt thereof, duplicates or copies of all
reports, notices, requests, demands, certificates, financial statements and any
other instruments furnished to the Trustee hereunder; provided that the Trustee
shall not be required to furnish the Advisory Board with a copy of any such
materials if the Trustee determines that such Person has otherwise received such
copies, unless such Person so requests.

-14-

          Section 6.04   Resignation of the Trustee.

          (a)  The Trustee may resign by giving 30 days’ prior written notice to
the Advisory Board. In the case of the resignation of the Trustee, the Advisory
Board shall appoint a Person to serve as successor Trustee, provided that such
Person shall in all respects satisfy the requirements of Section 3807 of the
Act, or any successor provision, and shall be a bank or trust company
incorporated and doing business within the United States of America, whose
business shall consist at least in part of serving as trustee in arrangements
comparable to those contemplated hereby and having a combined capital and
surplus of at least $50,000,000, if there be such an institution willing, able
and legally qualified to perform the duties of the Trustee hereunder upon
reasonable or customary terms. The appointment of the successor Trustee shall
take effect concurrently with (i) the resignation of the former Trustee and (ii)
the ratification of this Agreement, and no resignation of a Trustee shall be
effective absent the concurrent appointment of a successor Trustee.

          (b)  If a successor Trustee shall not have been appointed within 30
days after such notice of resignation, the Trustee or the Advisory Board may
apply to any court of competent jurisdiction to appoint a successor Trustee to
act until such time as a successor shall have been appointed as above provided.

          (c)  Any corporation into which the Trustee may be merged or converted
or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation to which substantially all the corporate trust business of the
Trustee may be transferred, shall, subject to such corporation satisfying in all
respects the requirements set forth in Section 6.04(a), be the Trustee he
reunder without further action.

          (d)  Upon the substitution of the Person serving as Trustee, the
successor Trustee shall file an amendment to the Certificate of Trust with the
Secretary of State in accordance with the provisions of Section 3810 of the Act,
indicating the change in the Trustee.

          Section 6.05.   Liability.

          (a)  The Trustee shall not be personally liable under any
circumstances, except (i) for its own bad faith, willful misconduct or gross
negligence, and (ii) for taxes, fees or other charges on, based on or measured
by any fees, commissions or compensation received by the Trustee in connection
with any of the transactions contemplated by this Agreement.

          (b)  The provisions of this Agreement, to the extent that they
restrict the duties and liabilities of the Trustee otherwise existing at law or
in equity, replace such other duties or liabilities of the Trustee to the extent
permissible under law or in equity.

          (c)  The Trustee shall not be liable for the default or misconduct of
the Advisory Board or ADS.

-15-

          (d)  The Trustee shall not be liable for voting (or refraining from
voting) the MAS Stock held in the Trust Estate so long as such shares are voted
(or not voted) in accordance with and as required by Section 4.04.

          Section 6.06.   Indemnification. ADS shall indemnify, pay, protect,
and hold harmless each of the Trustee, its officers, directors, employees,
shareholders and agents (collectively the “Indemnified Trustee Persons” or
individually an “Indemnified Trustee Person”) from and against any and all
liabilities, obligations, losses, damages, claims, actions, judgments, suits,
proceedings, taxes, costs, expenses and disbursements of any kind or nature
whatsoever including, without limitation, all reasonable legal fees, third party
costs and expenses of defense, appeal and settlement of any and all suits,
actions, or proceedings instituted against such Indemnified Trustee Person and
all reasonable third party costs of investigation in connection therewith that
may be imposed on, incurred by, or asserted against an Indemnified Trustee
Person relating to or arising out of any action or inaction on the part of the
Trust or an Indemnified Trustee Person in respect of the Trust. If any action,
suit, or proceeding shall be pending against one or more Indemnified Trustee
Persons relating to or arising out of any action or inaction of the Indemnified
Trustee Person or Indemnified Trustee Persons, ADS shall have the right to
assume the defense of the Indemnified Trustee Person or Indemnified Trustee
Persons in which case such defense shall be conducted by counsel chosen by ADS
and reasonably satisfactory to the Indemnified Trustee Person or Indemnified
Trustee Persons and IBM Credit; provided, however, that if an Indemnified
Trustee Person is advised by its counsel that due to actual or potential
conflicting interests representation by the same counsel would be inappropriate
under applicable standards of professional conduct, such Indemnified Trustee
Person may, at the expense of ADS, employ separate counsel of its choice with
respect to all matters as to which such conflicting interests arise in any such
action. The indemnities contained in this Section shall survive the resignation
of the Trustee, termination of the Trust or the termination of this Agreement.

          Section 6.07  Fees and Expenses. The Trustee’s fees (as detailed on
Exhibit D) and all reasonable out-of-pocket expenses, disbursements and advances
incurred or made by the Trustee, in its capacity as Trustee hereunder,
including, without limitation, the costs and expenses of the winding up,
liquidation and termination of the Trust, shall be paid by ADS promptly upon
written request therefor.

ARTICLE VII.

DISSOLUTION AND LIQUIDATION OF THE TRUST

          Section 7.01.   Dissolution of the Trust. The Trust shall be
dissolved, wound up and terminated upon delivery by IBM Credit of the Final
Payment Notice, as provided in Section 5.02.

          Section 7.02.   Liquidation of the Trust. In connection with the
dissolution of the Trust, the assets of the Trust shall be liquidated at the
written direction of ADS and applied as follows: (i) first, to pay the costs and
expenses of the winding up, liquidation and termination of the Trust, including
all amounts owed to the Trustee, (ii) second, to establish reserves to the
extent required by the Act and any applicable law, in each case, in the order of
priority provided by law, and (iii) third, to ADS.

-16-

          Section 7.03.   Termination of the Trust.

          (a)  The Trust (and this Agreement) shall be deemed terminated when
all of the Trust’s assets shall have been disposed of and distributed as
provided herein.

          (b)  Upon the winding up of the Trust and its termination, the Trustee
shall cause the Certificate of Trust to be canceled by filing a certificate of
cancellation with the Delaware Secretary of State in accordance with the
provisions of Section 3810 of the Act.

ARTICLE VIII.

NOTICES

          Section 8.01.   Notices. All notices, demands, consents or requests
required or permitted under this Agreement must be in writing, and shall be
delivered by facsimile, courier or first class mail, postage prepaid, addressed
as follows. Each notice hereunder must be delivered to the Trustee, ADS, each
Advisory Board Member and IBM Credit.

  (i) If to the Trustee, as set forth in Section 2.01.

  (ii) If to ADS:

Applied Digital Solutions, Inc.
400 Royal Palm Way, Suite 410
Palm Beach, Florida 33480
Attention: Jerome C. Artigliere
Facsimile: (561) 805-8004

  (iii) If to the Advisory Board Members:

c/o the Trustee

  (iv) If to IBM Credit:

IBM Credit Corporation
1500 Riveredge Parkway
Atlanta, Georgia 30328
Attention: Region Manager, East
Facsimile: (770) 644-4826

with a copy to:

IBM Global Financing
Special Handling Group
North Castle Drive
Armonk, New York 10504
Attention: Bruce Gordon
Facsimile: (914) 765-6268

-17-

ARTICLE IX.

MISCELLANEOUS PROVISIONS

          Section 9.01.  Entire Agreement.

          This Agreement (including, without limitation, the exhibits hereto)
supercedes all prior agreements, written or oral, among the parties hereto
relating to the transactions contemplated hereby, and each of the parties hereto
represents and warrants to the others that this Agreement constitutes the entire
agreement among the parties hereto relating to the transactions contemplated
hereby.

          Section 9.02.   Governing Law.

          (a)  THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND ENFORCED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE (WITHOUT REGARD TO CONFLICTS
OF LAWS PRINCIPLES).

          (b)  The parties hereto hereby declare that it is their intention that
this Agreement shall be regarded as made under the laws of the State of Delaware
and that the laws of said State shall be applied in interpreting its provisions
in all cases where legal interpretation shall be required. Each of the parties
hereto agrees (a) that this Agreement involves at least $100,000.00, and (b)
that this Agreement has been entered into by the parties hereto in express
reliance upon 6 Del. C. § 2708. Each of the parties hereto hereby irrevocably
and unconditionally agrees (a) to be subject to the jurisdiction of the courts
of the State of Delaware and of the federal courts sitting in the State of
Delaware, and (b)(1) to the extent such party is not otherwise subject to
service of process in the State of Delaware, to appoint and maintain an agent in
the State of Delaware as such party's agent for acceptance of legal process, and
(2) that, to the fullest extent permitted by applicable law, service of process
may also be made on such party by prepaid certified mail with a proof of mailing
receipt validated by the United States Postal Service constituting evidence of
valid service, and that service made pursuant to (b)(1) or (2) above shall, to
the fullest extent permitted by applicable law, have the same legal force and
effect as if served upon such party personally within the State of Delaware.

          Section 9.03.   Effect; Third Party Beneficiaries. Except as otherwise
specified herein, this Agreement shall be binding upon and inure to the benefit
of the parties and their respective legal representatives, successors and
assigns. IBM Credit (and its assignees) is an intended third party beneficiary
hereof and shall be entitled to enforce this Agreement against the parties
hereto as if it were a party hereto.

          Section 9.04.   Severability of Provisions. If any term, provision,
covenant or condition of this Agreement, or the application thereof to either
party or any circumstance, is held to be unenforceable, invalid or illegal (in
whole or in part) for any reason (in any relevant jurisdiction), the remaining
terms, provisions, covenants and conditions of this Agreement, modified by the
deletion of the unenforceable, invalid or illegal portion (in any relevant
jurisdiction), will continue in full force and effect, and such
unenforceability, invalidity or illegality will not otherwise affect the
enforceability, validity or legality of the remaining terms, provisions,
covenants and conditions of this Agreement so long as this Agreement as so
modified continues to express, without material change, the original intentions
of the parties as to the subject matter hereof and the deletion of such portion
of this Agreement will not substantially impair the respective expectations or
reciprocal obligations of the parties or the practical realization of the
benefits that would otherwise be conferred upon the parties. The parties will
endeavor in good faith negotiations to replace the prohibited or unenforceable
provision with a valid provision, the economic effect of which comes as close as
possible to that of the prohibited or unenforceable provision.

-18-

          Section 9.05.  Amendments, Waivers, Etc. This Agreement may not be
amended, discharged or terminated nor may any provision hereof be waived unless
such amendment, discharge, termination or waiver is in writing and signed by the
Trustee and ADS, with the prior unanimous written consent of the Advisory Board.

          Section 9.06.  Tax Characterization.

          (a)  Each of the parties hereto recognizes and intends that, for
United States federal, state and local income tax purposes the Trust will not be
treated as an association taxable as a corporation.

          (b)  To the extent that any of the parties hereto is required to
report any item of income, gain, loss, deduction or credit relating to the Trust
for United States federal, state or local income tax purposes, such party shall
report such item in a manner consistent with the characterization intended by
this Section 9.06 and shall not take any contrary position on any tax return or
report relating to the United States federal, state or local income taxes or
take any other action that is inconsistent with such characterization.

          Section 9.07.   Counterparts. This Agreement may be executed in any
number of counterparts, each of which shall be deemed to be an original, but all
such counterparts shall together constitute but one and the same instrument.

-19-

          IN WITNESS WHEREOF, the undersigned have executed this Agreement as of
the date above first written.

  WILMINGTON TRUST COMPANY
as Trustee

  By: /s/ James P. Lawler

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

    Name:     James P. Lawler     Title:   Vice President

  APPLIED DIGITAL SOLUTIONS, INC.
as Beneficial Owner

  By: /s/ Jerome C. Artigliere

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

    Name:     Jerome C. Artigliere     Title:   Senior Vice President

-20-

Exhibit A

[Form of Registration Rights Agreement]

Exhibit B

FORM OF ASSIGNMENT

          This Assignment is made and entered into as of _______ __, 2002 (the
“Effective Date”), between Applied Digital Solutions, Inc., a corporation
organized under the laws of Missouri (the “Assignor”), and Digital Angel Share
Trust, a Delaware statutory business trust (the “Assignee”). Reference is made
to the Trust Agreement, dated as of March 1, 2002 (as amended or modified, the
“Trust Agreement”), between Wilmington Trust Company, a Delaware banking
corporation, and the Assignor. Capitalized terms used herein and not otherwise
defined herein have the meanings set forth for such terms in the Trust
Agreement.

          1.  The Assignor hereby sells, assigns, transfers, conveys and sets
over to the Assignee, as of the Effective Date, all of the Assignor’s right,
title and interest in stock certificates numbered _______ representing
19,600,000 shares of MAS Stock, which is all of the MAS Stock owned by Assignor.

          2.  The Assignor hereby assigns to the Assignee all of the Assignor’s
rights under the Registration Rights Agreement.

          3.  THIS ASSIGNMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE
WITH, THE INTERNAL LAWS OF THE STATE OF DELAWARE.

          IN WITNESS WHEREOF, the Assignor has caused this Assignment to be
executed by its duly authorized officer as of the Effective Date.

  APPLIED DIGITAL SOLUTIONS, INC.

         

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

  By:  

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

  Its:  

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

Receipt Acknowledged:

DIGITAL ANGEL SHARE TRUST
By: Wilmington Trust Company, not in
its individual capacity but solely as Trustee

  By:  

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

  Name:  

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

  Title:  

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

 

Exhibit C

MEDICAL ADVISORY SYSTEMS, INC.

ACTION BY WRITTEN CONSENT OF STOCKHOLDER

          The undersigned, being the holder of a majority of the issued and
outstanding common stock (the “Stockholder”) of Medical Advisory Systems, Inc.,
a Delaware corporation (the “Corporation”), and having not less than the minimum
number of votes necessary to take the actions described below at a meeting at
which all shares entitled to vote thereon were present and voted, does hereby
consent to the taking of the following actions in lieu of a meeting and does
hereby adopt the following resolutions by written action pursuant to Section
228(a) of the General Corporation Law of the State of Delaware (the “DGCL”):

          RESOLVED, that the Certificate of Incorporation of the Corporation be
amended in accordance with the attached Certificate of Amendment of Certificate
of Incorporation of Medical Advisory Systems, Inc. (the “Certificate of
Amendment”); and

          FURTHER RESOLVED, that the Certificate of Amendment be, and it hereby
is, approved and adopted; and

          FURTHER RESOLVED, that the proper officers of the Corporation be, and
each of them hereby is, authorized and directed to take all actions necessary or
prudent to cause the Certificate of Amendment to be filed with the Office of the
Secretary of State of the State of Delaware on the date hereof, and to take such
other actions as are required under the DGCL and any other applicable law or
regulation in respect of the subject matter of the resolutions contained herein.

Dated as of March 1, 2002

  DIGITAL ANGEL SHARE TRUST

By: Wilmington Trust Company, not in its
individual capacity but solely as Trustee

  By:  

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

  Name:     Title:  

CERTIFICATE OF AMENDMENT

OF

CERTIFICATE OF INCORPORATION

OF

MEDICAL ADVISORY SYSTEMS, INC.

          Medical Advisory Systems, Inc., a corporation organized and existing
under and by virtue of the General Corporation Law of the State of Delaware,
DOES HEREBY CERTIFY:

          FIRST: That the Board of Directors of Medical Advisory Systems, Inc.
(the "Corporation") duly adopted resolutions setting forth a proposed amendment
to the Certificate of Incorporation of the Corporation, declaring said amendment
to be advisable and directing that the proposed amendment be submitted to the
stockholders of the Corporation for approval. The resolution setting forth the
proposed amendment is as follows:

          RESOLVED, that the Board of Directors of the Corporation hereby
declares that it would be advisable to amend the Certificate of Incorporation of
the Corporation by adding a new Article Ninth, as follows, and hereby directs
that the proposed amendment be submitted to the stockholders of the Corporation
for approval:

          "NINTH: The Corporation shall not take any of the following actions
without the approval of the holders of 66.6% of the issued and outstanding
common stock of the Corporation:

            (ii)  a Bankruptcy Decision with respect to the Corporation or any
of its direct or indirect subsidiaries if, at the time such Bankruptcy Decision
is implemented or is to be implemented, (i) a Bankruptcy Decision has been made
with respect to Applied Digital Solutions, Inc., a corporation organized under
the laws of Missouri ("ADS"), or any of its direct or indirect subsidiaries, or
(ii) ADS is in default under or with respect to any obligation for borrowed
money, including the Credit Documents, regardless of whether such default has
been declared; and

            (iii)  approving any issuance of Corporation Stock (or securities of
any of its direct or indirect subsidiaries) or securities convertible into or
exercisable for Corporation Stock (or securities of any of its direct or
indirect subsidiaries), including options or warrants for Corporation Stock (or
securities of any of its direct or indirect subsidiaries), for (A) non-cash
consideration or (B) cash consideration of less than Fair Market Value.

          For the purposes of items (i) and (ii) above, the following defined
terms shall have the following meanings:

          "Bankruptcy Decision" means, with respect to a specified entity, any
of the following actions: (a) filing any voluntary petition in bankruptcy on
behalf of such entity, (b) consenting to the filing of any involuntary petition
in bankruptcy against such entity, (c) filing any petition seeking, or
consenting to, reorganization or relief under any applicable federal, state or
foreign law relating to bankruptcy or insolvency, on behalf of such entity, (d)
consenting to the appointment of a receiver, liquidator, assignee, trustee,
sequestrator (or other similar official) of such entity or a substantial part of
the property of such entity, (e) making any assignment for the benefit of
creditors on behalf of such entity, (f) admitting in writing the inability of
such entity to pay its debts generally as they become due, or (g) taking any
action by such entity in furtherance of any of the foregoing actions.

          "Corporation Stock" means the common stock, par value $.005 per share,
of the Corporation, and any stock into which such common stock shall have been
changed, any stock resulting from any reclassification of such common stock, any
other shares of stock issued or issuable with respect thereto (whether by way of
a stock dividend or stock split or in exchange for or upon conversion of such
shares or otherwise in connection with a combination of shares,
recapitalization, merger, consolidation or other corporate reorganization), and
all other stock of any class or classes (however designated) of the Corporation
(or its successors) the holders of which have the right, without limitation as
to amount, either to all or to a share of the balance of current dividends and
liquidating dividends after the payment of dividends and distributions on any
shares entitled to preference.

          "Credit Agreement" means that certain Third Amended and Restated Term
Credit Agreement, dated as of March 1, 2002, among IBM Credit Corporation,
Digital Angel Share Trust and ADS.

          "Credit Documents" means the Credit Agreement, the Guarantee (as
defined in the Credit Agreement), and any security agreements, leases,
instruments, documents, guarantees, schedules of assignment, contracts and
similar agreements, including schedules, attachments, exhibits and ancillary
documentation or other supporting documents, executed by or on behalf of each
Borrower (as defined in the Credit Agreement), or any other Loan Party (as
defined in the Credit Agreement), and delivered to Lender (as defined in the
Credit Agreement), pursuant to the Credit Agreement or otherwise, and all
amendments, supplements and other modifications to the foregoing from time to
time.

          "Fair Market Value" means, on any date specified, the average of the
daily Market Price of a share of Corporation Stock during the 10 consecutive
trading days before such date, except that, if on any such date the shares of
Corporation Stock are not listed or admitted for trading on any national
securities exchange or quoted in the over-the-counter market, Fair Market Value
shall be the Market Price on such date.

          "Market Price" means, on any date specified, an amount per share of
Corporation Stock equal to (i) the last reported sale price of such common
stock, regular way, on such date or, in case no such sale takes place on such
date, the average of the closing bid and asked prices thereof regular way on
such date, in either case as officially reported on the principal national
securities exchange on which such Corporation Stock is then listed or admitted
for trading, (ii) if such Corporation Stock is not the n listed or admitted for
trading on any national securities exchange but is designated as a national
market system security by the NASD, the last reported trading price of the
Corporation Stock on such date, (iii) if there shall have been no trading on
such date or if the Corporation Stock is not so designated, the average of the
closing bid and asked prices of the Corporation Stock on such date as shown by
the NASD automated quotation system, or (iv) if such Corporation Stock is not
then listed or admitted for trading on any national exchange or quoted in the
over-the-counter market, the fair value thereof (as of a date which is within 10
days of the date as of which the determination is to be made) determined in good
faith by the Corporation's Board of Directors.”

          SECOND: That thereafter, pursuant to resolution of its Board of
Directors, the proposed amendment was submitted to the stockholders of the
Corporation and that the necessary number of shares required by statute
consented to the adoption of the amendment by written consent pursuant to the
provisions of Delaware General Corporation Law Section 228.

          THIRD: That prompt written notice of the adoption of the amendment to
the Corporation's Certification of Incorporation was sent to all stockholders of
record who had not consented in writing as provided in Delaware General
Corporation Law Section 228(e).

          FOURTH: That said amendment was duly adopted in accordance with the
provisions of Section 242 of the Delaware General Corporation Law.

          IN WITNESS WHEREOF, said Medical Advisory Systems, Inc. has caused
this certificate to be signed by ________________, its President and
_____________________, its Secretary, this ___th day of ______________, 2002.

  By: /s/ [NAME]    

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  President ATTEST: /s/ [NAME]    

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  Secretary  

Exhibit D

[Trustee’s Fees]