Document:

EXHIBIT 10.12
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                                PERSONAL GUARANTY

           1. IN CONSIDERATION of the sum of One Dollar ($1.00) and other
sufficient consideration, receipt of which is hereby acknowledged, the
undersigned ("Guarantor") unconditionally guarantees to Gemstone Investment
Company, Inc. (the "Lender"), the payment when due of the a certain $750,000
Promissory Note, dated June 4, 2002, made pursuant to a Loan Agreement, also
dated as of June 4, 2002, between LocatePLUS Holdings Corporation (the
"Principal") in favor of the Lender (collectively, the "Obligations").

           2. In the event that Principal fails at any time to make any part or
all of its payments under the Obligations, whether by acceleration or otherwise,
Guarantor will pay the liabilities guaranteed in the same manner as if they
constituted the direct and primary obligation of the Guarantor.

           3. Guarantor agrees that any extension of credit for the purchase of
goods, or services, or for any other reason Lender has made, or may hereinafter
make under the terms of the Obligations, to Principal shall be considered made
on the strength of, and in reliance upon this Guaranty Agreement.

           4. At any time after an event of default under the Obligations that
remains uncured, any or all of Principal's Obligations shall, at Lender's
option, become (for the purposes of this Guaranty) immediately due and payable
by the Guarantor. Lender shall have the right to proceed against Guarantor for
the amount thereof without notice.

           5. The invalidity of any one or more  provisions of this Guaranty
shall not affect the remaining provisions of this Guaranty. This Guaranty shall
be binding on the successors and assigns of Guarantor.

           This Guaranty shall not be released or modified by the death of any
Guarantor or dissolution or bankruptcy of Principal.

           Executed as of June 4, 2002.

WITNESS:                               GUARANTOR:

                                       /s/ Jon R. Latorella
---------------------------            ------------------------------
                                       Jon R. Latorella

                                       Address:

                                       ______________________________

                                       ______________________________

                                       ______________________________EXHIBIT 10.13
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                          TEN YEAR TERM PROMISSORY NOTE

U.S.$ 175,000.00                                           AS OF JANUARY 3, 2000
                                                          BEVERLY, MASSACHUSETTS

           JON R. LATORELLA, a Massachusetts resident (the "Maker"), for value
received, hereby promises to pay to LocatePLUS.com, Inc., or its assigns (the
"Holder"), the sum of One Hundred and Seventy Five Thousand Dollars
(US$175,000.00), bearing interest and payable as set forth below.

           The following is a statement of the rights of Holder and the
conditions to which this Note is subject, and to which Holder, by the acceptance
of this Note, agrees.

1. TERMS OF PAYMENT, ETC.

           (A) INTEREST. Interest on the Note shall initially be the 90 Day
Treasury Bill Rate as published by THE WALL STREET JOURNAL as of the date of
this Note and shall be adjusted annually to be the 90 Day Treasury Bill rate on
each successive anniversary of this Note, as published in THE WALL STREET
JOURNAL, unless such day is a Saturday, Sunday or legal holiday in the
Commonwealth of Massachusetts or unless the 90 Day Treasury Bill Rate is not
published in THE WALL STREET JOURNAL as of such date, in which case it will be
the 90 Day Treasury Bill Rate on the first business day on which such rate is
published following such anniversary; PROVIDED THAT if an Event of Default (as
defined below) has occurred, the interest on the Note that shall accrue from
such Event of Default until the Note has been paid in full or cancelled as set
forth herein shall be twelve percent (12%) per annum. The interest on this Note
will be calculated based on a 365 day year. Notwithstanding any provisions in
this Note, the total liability for payments legally regarded as interest shall
not exceed the maximum limits imposed by applicable law, and any payment of the
same in excess of the amount allowed thereby shall, as of the date of that
payment, automatically be deemed to have been applied to the payment of the
principal indebtedness evidenced hereby, or, if same has been fully repaid,
shall be repaid to Maker upon demand.

           (B) MATURITY. This Note shall be due and payable in one lump sum on
January 3, 2010 (the "Maturity"); PROVIDED THAT Maker shall have the right,
without prepayment penalty, to prepay the entirety or any portion of the
outstanding principal amount, together with all accrued interest thereon. Time
is of the essence of this Note. In the event of any default in the payment of
this Note, and if the same is referred to an attorney at law for collection or
suit is brought on this Note, Maker shall pay Holder, in either case, all
expenses and costs of collection, including, but not limited to, court costs and
reasonable attorney's fees and disbursements.

           (C) PAYMENTS. All payments received, whether or not designated as
principal or interest, shall first be applied to penalties, premiums or other
charges due, then to interest due and the remainder to principal.

2. EVENTS OF DEFAULT. If any of the events specified in this Section 2 shall
occur (herein individually referred to as an "Event of Default"), Holder may, so
long as such condition exists, declare the entire principal and unpaid accrued
interest hereon immediately due and payable, by notice in writing to Maker:

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           (A) FAILURE TO PAY WHEN DUE. Default in the payment of the principal
or unpaid accrued interest of this Note when due and payable; or

           (B) INSTITUTION OF BANKRUPTCY BY OR AGAINST MAKER. The institution by
Maker or against him of proceedings to be adjudicated as bankrupt or insolvent,
or the consent by him to institution of bankruptcy or insolvency proceedings
against him, or a petition or answer or consent seeking reorganization or
release under Title XI (Bankruptcy) of the United States Code, or any other
similar applicable federal or state law, or the consent by him to the filing of
any such petition or the appointment of a receiver, liquidator, assignee, or
trustee, or the making by him of an assignment for the benefit of creditors.

3. CANCELLATION OF DEBT.

           (A) CANCELLATION OF DEBT UPON A CHANGE OF CONTROL. In the event that
a "Change of Control" transaction is consummated, the Maker's obligations and
debt evidenced by this Note shall immediately and without action on behalf of
any party be cancelled, and this Note shall thereafter be null and void and
without any further force or effect. For the purposes of this Section 3(a), a
"Change of Control" transaction shall be a transaction in which (I) any
individual, entity or group (within the meaning of Sections 13(d)(3) and
14(d)(2) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")
acquires beneficial ownership of any capital stock of LocatePLUS.com, Inc. (the
"Company"), if, after such acquisition, such individual, entity or group
beneficially owns (within the meaning of Rule 13d-3 promulgated under the
Exchange Act) more than 50% of either (X) the then-outstanding shares of Common
Stock of the Company (the "Outstanding Company Common Stock"), or (Y) the
combined voting power of the then-outstanding securities of the Company
generally entitled to vote (the "Outstanding Company Voting Securities");
PROVIDED, HOWEVER, that for the purposes of this paragraph (i), no acquisition
by any person, entity, or group pursuant to a Business Combination, as defined
below, which complies with clauses (x) and (y) of paragraph (ii) below will
constitute a Change of Control; or (II) the consummation of a merger,
consolidation, reorganization, recapitalization or statutory share exchange
involving the Company or a sale or other disposition of all or substantially all
of the assets of the Company (a "Business Combination"), unless, immediately
after such Business Combination, each of the following is satisfied: (X) all or
substantially all of the individuals or entities who were beneficial owners of
the Outstanding Company Stock and Outstanding Company Voting Securities
immediately prior to that Business Combination beneficially own, directly or
indirectly, more than 50% of the then-outstanding shares of the Company's Common
Stock and the combined voting power of the then-outstanding securities generally
entitled to vote, respectively, of the resulting or acquiring entity in the
Business Combination (which shall include, without limitation, an entity that as
a result of such transaction owns the Company or substantially all of the
Company's assets either directly or through one or more subsidiaries) (such
resulting or acquiring entity is referred to herein as the "Acquiring Entity"),
in substantially the same proportions as their ownership of the Outstanding
Company Common Stock and Outstanding Company Voting Securities, respectively,
immediately prior to such Business Combination (it being understood that for
purposes of the determination of whether or not such voting power of the
then-outstanding securities is owned, directly or

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indirectly, in substantially the same proportions as the ownership of the
Outstanding Company Common Stock and Outstanding Company Voting Securities,
respectively, any securities transferred pursuant to transfers by a security
holder which is an entity to a wholly-owned subsidiary of that entity, or by a
security holder which is a closely held partnership PRO RATA to the partners of
such partnership, or transfers by a limited liability company PRO RATA to the
members of such limited liability company shall be disregarded and (Y) no person
or entity (excluding the Acquiring Entity or any employee benefit plan (or
related trust) maintained or sponsored by the Company or by the Acquiring
Entity) beneficially owns, directly or indirectly, more than 50% of the
then-outstanding equity of the Acquiring Entity, or of the combined voting power
of the then-outstanding securities of such corporation generally entitled to
vote (except to the extent that such ownership existed prior to the Business
Combination).

           (B) CANCELLATION OF DEBT ON THREE YEAR ANNIVERSARY. In the event
that, as of January 3, 2003, the Maker is (I) employed by the Company and has
not been given notice of the Company's intention to terminate his employment;
(II) an independent contractor of the Company with a written consulting (or
similar) agreement between the Company and the Maker in force and effect (and no
notice of termination of such contract or such relationship has been given); or
(III) a member of the Company's Board of Directors; then the obligations and
debt evidenced by this Note shall immediately and without further action by any
party be cancelled, and this Note shall thereafter be null and void and without
any force or effect.

           (C) TAX GROSS-UP. In the event that this Note is cancelled pursuant
to Sections 3(a) or 3(b) hereof, the Company agrees that it shall pay to the
Maker, no later than two months after the end of the Maker's applicable tax year
in which such cancellation occurred, an amount, in cash, determined by the
following calculation:

                                 P = (1-r) x G,

WHERE, P is the accrued and unpaid principal, interest and penalties accrued
pursuant to the Note;

WHERE, R is the Maker's marginal federal and state income tax rate (including
the Maker's tax rate as a result of filing as a married taxpayer, if
applicable), as certified in writing by a Certified Public Accountant or
Certified Financial Planner for the applicable tax year in which such
cancellation took place; and

WHERE, G is the payment to be made by the Company pursuant to this Section 3(c)
of this Note.

4. COVENANTS. Maker will perform and observe all of its obligations to Holder
set forth in this Agreement.

5. ASSIGNMENT; TRANSFER. The rights and obligations of Maker and Holder shall be
binding upon and benefit the successors, assigns, heirs, administrators, and
transferees of the parties.

6. WAIVER; PRESENTMENT; AMENDMENT. No delay or omission on the part of Holder in
exercising any right hereunder shall operate as a waiver of such right or of any
right of such Holder or his, her, or its assigns, nor shall any delay, omission,
or waiver on any one occasion be deemed a bar or waiver of the same or any other
right on any future occasion. Except as otherwise expressly provided herein, the
Maker hereby

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waives presentment, demand, protest, and notices of any kind. Maker shall pay on
demand all costs of collection, including court costs and reasonable counsel's
fees suffered or incurred by the Holder in enforcing this Note. Any provision of
this Note may only be amended, waived or modified upon the written consent of
Maker and Holder.

7. TREATMENT OF NOTE. To the extent permitted by generally accepted accounting
principles, Maker will treat, account, and report the Note as debt and not
equity for accounting purposes and with respect to any returns filed with
federal, state, or local tax authorities.

8. NOTICE. All notices and other communications from Maker to Holder shall be
mailed by certified mail, return receipt requested, sent by overnight courier
(requiring a signature for delivery), or by facsimile to the address furnished
to Maker in writing by the last Holder who shall have furnished an address to
the Maker in writing, PROVIDED that in the event that notice is sent by fax,
notice is also given by other approved means.

9. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the Commonwealth of Massachusetts, excluding that
body of its law relating to conflict of laws.

10. HEADING; REFERENCES. All headings used herein are used for convenience only
and shall not be used to construe or interpret this Note. Except where otherwise
indicated, all references herein to Sections refer to Sections hereof.

11. VENUE. Maker and Holder (A) agree that any legal suit, action, or proceeding
arising out of or relating to this Note shall be instituted exclusively in the
state courts for Middlesex County, Massachusetts, or in the Federal District
Court serving Middlesex County, Massachusetts; (B) each waive any objection to
the venue of any such suit, action, or proceeding and the right to assert that
such forum is not convenient; and (C) irrevocably consent to the jurisdiction of
the state courts for Middlesex County, Massachusetts and the Federal District
Court in Middlesex County, Massachusetts any such suit, action, or proceeding.
The Company and the Holder further agree to accept and acknowledge service of
any and all process which may be served in any such suit, action, or proceeding
in such courts and agree that service of process upon it mailed by certified
mail, return receipt requested, to the addresses set forth in Section 8 hereof
shall be deemed in every respect effective service of process upon it in any
such suit, action or proceeding.

12. ENTIRE AGREEMENT. This is the entire agreement between the parties, and it
supercedes all other agreements, understandings, contracts or commitments on the
subject matter.

13. COUNTERPARTS. This Agreement may be executed in one or more counterparts,
all of which shall be considered one and the same agreement, and shall become
effective when one or more of the counterparts have been signed by each party
and delivered to the other parties, it being understood that all parties need
not sign the same counterpart.

                            [SIGNATURE PAGE FOLLOWS]

                                                  PROMISSORY NOTE SIGNATURE PAGE

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           IN WITNESS WHEREOF, Maker has caused this Note to be issued as of the
date first written above.

UNDER SEAL.

                                                /s/ Jon R. Latorella
                                                -------------------------------
                                                Jon R. Latorella

ACCEPTED AND AGREED:

LOCATEPLUS.COM, INC.

By: /s/ Robert A. Goddard
    -------------------------------------
    Robert A. Goddard, Treasurer and CFO
    Duly Authorized

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