Document:

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                                                                    Exhibit 10.6

                             NOTE PURCHASE AGREEMENT

      THIS NOTE PURCHASE AGREEMENT (the "Agreement") is made and entered into as
of the 21st day of January, 2000 by and between Real Time Strategies, Inc. d/b/a
RTS Wireless, a New York corporation (the "Company"), and Monsoon Ventures LLC,
a New York limited liability company (the "Purchaser").

      In consideration of the mutual promises, covenants and conditions
hereinafter set forth, the parties hereto mutually agree as follows:

1. The Note.

      1.1 The Purchaser hereby agrees to lend to the Company $3,500,000, on the
terms and conditions hereof (the "Loan"). The Loan shall be evidenced by a
convertible promissory note in substantially the form attached hereto as Exhibit
A (the "Note"), and shall be subject to, and convertible into equity securities
of the Company upon, the terms and conditions contained therein. The Note shall
bear interest at a rate equal to eight percent per annum, compounded annually.
All shares issuable or issued upon any conversion of the Note (or upon any
conversion of any additional convertible promissory notes of the Company
purchased by the Purchaser) shall be referred to herein as "Shares".

2. Closing Dates; Delivery.

      2.1 Closing Date. The consummation of the Loan and the initial issuance of
the Note pursuant to this Agreement, shall take place at the offices of Zevnik
Horton Guibord McGovern Palmer & Fognani LLP, 1330 Avenue of the Americas, 11th
Floor, New York, New York at 1:00 p.m., Eastern Standard Time, on January 21,
2000, or on such other date as may be mutually agreed to by the Company and the
Purchaser, such time and date being referred to herein as the "Closing". At the
Closing, the Purchaser shall lend, and the Company shall accept, $3,500,000 on
the terms set forth herein and in the Note.

      2.2 Delivery. At the Closing (a) the Company will execute and deliver to
the Purchaser the Note, which shall be issued in the Purchaser's name and dated
the Closing Date and (b) the Purchaser shall deliver to the Company the Loan
amount in the form of cash, certified check or wire transfer, as may be required
by the Company.

3. Additional Loans, Additional Investment and Equity Call. Without limiting
their respective rights and obligations set forth in and/or with respect to the
Note, the parties hereby agree that they shall have the respective rights and
obligations set forth below:

      3.1 Calls in Exchange for Additional Convertible Notes. From time to time
after the date hereof but prior to the earlier of January 24, 2001 or the
effective date of any Public Offering (as defined in the Note), the Company, at
its option, may require the Purchaser to loan additional sums to the Company up
to an aggregate amount of $1,500,000. Within twenty (20) business days after its
receipt of a written request for such an additional loan by the Company, the
Purchaser shall advance such loan to the Company upon the Company's execution
and delivery to the Purchaser of an additional convertible promissory note
representing such loan.

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Each such additional convertible promissory note shall be substantially similar
in form to the Note, but will show the amount of the applicable additional loan
and the date thereof. The Purchaser may, at its option exercised by written
notice to the Company, designate an alternate entity or person(s) to advance one
or more of such loan(s) (or a portion thereof) to the Company in accordance with
the terms of this Section 3.1 (including the time limitation set forth herein);
provided, however, that no such designation shall be effective until the Company
receives from its counsel, within ten (10) days after request therefor, an
opinion or other advice to the effect that such designation and the additional
loans comply with all applicable federal and state securities laws and
regulations, which opinion or other advice shall be reasonably acceptable in
form and substance to the Company.

4. Shareholders Agreement.

      4.1 Upon execution and delivery of the Note, the Purchaser agrees to (i)
execute a Shareholders Agreement in the form attached hereto as Exhibit B (the
"Shareholders Agreement") and deliver the same to the Company, and (ii)
hereafter, as a condition to the issuance of any Shares, cause each member of
the Purchaser to whom the Purchaser may transfer the Note (or any portion
thereof) or any Shares, as permitted in the Shareholders Agreement, to execute a
counterpart of the Shareholders Agreement and deliver the same to the Company.

5. Representations, Warranties and Covenants of the Company. The Company hereby
represents, warrants and covenants to and with the Purchaser as follows:

      5.1 Corporate Power and Authority. The Company has all requisite corporate
power to enter into this Agreement, to carry out the terms hereof, and to issue
to the Purchaser the Note and the Shares upon any conversion of the Note. All
corporate action on the part of the Company, its officers, directors and
shareholders necessary for the performance of the obligations of the Company
under this Agreement and the Note, and for the authorization, issuance and
delivery of the Note, has been taken prior to the Closing. This Agreement and
the Note have been duly executed and delivered by the Company and upon execution
and delivery by the Company this Agreement and the Note will be valid and
legally enforceable in accordance with their terms.

      5.2 Authorization of Shares. After the Closing, the Company shall take all
necessary steps to ensure that sufficient shares of its common stock are
available for issuance as Shares in accordance with this Agreement and the Note.

      5.3 Financial Statement. The Company has delivered to the Purchaser its
business plan. The financial statements set forth therein fairly present the
consolidated financial condition of the Company as of the date of each balance
sheet and the statement of operations contained therein accurately represents in
all material respects the operating results of the Company during the period
indicated therein.

6. Representation, Warranties and Covenants of the Purchaser. The Purchaser
hereby represents and warrants to, and covenants with, the Company as follows:

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      6.1 Corporate Power and Authority. The Purchaser has all requisite power
to enter into this Agreement, to carry out the terms hereof, to accept the Note,
to accept the Shares upon any conversion of the Note and to make the Loan. All
action on the part the Purchaser and its members necessary to authorize the
performance of the obligations of the Purchaser and its members under this
Agreement and the Note has been taken prior to the Closing. This Agreement has
been duly executed and delivered by the Purchaser and upon execution and
delivery by the Purchaser this Agreement will be valid and legally enforceable
in accordance with its terms.

      6.2 Investment Representations. The Purchaser understands that the Note
and the Shares have not been registered under the Securities Act of 1933, as
amended (the "Act"), and that they are being offered and sold pursuant to an
exemption from registration contained in the Act based in part upon the
representations of the Purchaser contained herein. The Purchaser hereby
represent, warrants to, and agrees with the Company that the Purchaser is
acquiring the Note and the Shares for its own account for investment and not
with a view to, or for sale in connection with, any distribution thereof in
violation of the Act. By executing this Agreement, the Purchaser further
represents and warrants that the Purchaser has no contract, undertaking,
agreement or arrangement with any person to sell, transfer, or grant
participation to such person or to any third person, with respect to the Note or
Shares.

      6.3 Experience. The Purchaser is experienced in evaluating private
companies such as the Company, and has such knowledge and experience in
financial and business matters as to be capable of evaluating the merits and
risks of the Purchaser's investment in the Note (and any additional convertible
promissory notes of the Company purchased by the Purchaser) and the Shares, and
has the ability to bear the economic risks of its investment for an indefinite
period of time, and, at the present time, is able to afford a complete loss of
such investment.

      6.4 Rule 144. The Purchaser acknowledges that the Note and the Shares must
be held indefinitely unless subsequently registered under the Act or an
exemption from such registration is available. The Purchaser is aware of the
provisions of Rule 144 promulgated under the Act which permit limited resale of
shares purchased in a private placement subject to the satisfaction of certain
conditions. The Purchaser covenants that, in the absence an effective
registration statement covering the Note and the stock in question, except as
permitted in the Note, the Purchaser will sell, transfer, or otherwise dispose
of the Note and Shares only in a manner consistent with the Purchaser's
representations and covenants set forth in this Section 6.4.

      6.5 No Public Market. The Purchaser understands that no public market now
exists for any of the securities issued by the Company, nor is any public market
for the Note and the Shares contemplated at present, and it is unlikely that a
public market will ever exist for the Note or the Shares.

      6.6 Access to Data. The Purchaser has received and reviewed information
about the Company and has had an opportunity to discuss the Company's business,
management and financial affairs with its management and to review the Company's
facilities. The Purchaser understands that such discussions, as well as any
written information issued by the Company,

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were intended to describe the aspects of the Company's business and prospects
which the Company believes to be material, but were not necessarily an
exhaustive description.

      6.7 Accredited Investors. The Purchaser, and each member of the Purchaser,
is an "accredited investor" as defined in Regulation D under the Act. The
Purchaser agrees that, in addition to the foregoing representation and warranty
relating to the "accredited investor" status of each of the Purchaser and its
members, the Company may rely on the representations and warranties of each
member of the Purchaser set forth in Article XI of the Monsoon Ventures, LLC
Operating Agreement, a copy of which has been provided to the Company. The
Purchaser represents that such furnished copy is complete and accurate in all
respects relevant to each such member's status as an "accredited investor".

      6.8 Preservation of Subchapter S Status. Each member of the Purchaser to
whom the Purchaser transfers any Shares is and shall at all times be an
individual (i.e., natural person) resident in the United States, or shall comply
with such other applicable requirements, such that upon such transfer and at all
times thereafter the Company shall not suffer the loss of its status as a
Subchapter S corporation under the Internal Revenue Code. As a condition to the
transfer of any such Shares, the Purchaser shall furnish such evidence as the
Company may reasonably require to show that such transfer will not cause the
loss of such Subchapter S status.

7. Lock-Up and Regulatory Compliance Requirements.

      (a) Underwriters Lock-Up. The Purchaser agrees that, if so requested by
the Company and any representative of the underwriters (the "Managing
Underwriter") in connection with any registration of the offering of any
securities of the Company under the Act, the Purchaser shall not publicly sell
or otherwise publicly transfer any Shares during the 180-day period (or such
other lesser period as may be requested in writing by the Managing Underwriter)
(the "Market Standoff Period") following the effective date of a registration
statement of the Company filed under the Act. Such restriction shall apply only
to the first registration statement of the Company to become effective under the
Act that includes securities to be sold on behalf of the Company to the public
in an underwritten public offering under the Act. The Company may impose
stop-transfer instructions with respect to Shares subject to the foregoing
restrictions until the end of such Market Standoff Period. Notwithstanding the
foregoing, in the event the Managing Underwriter requires or agrees that the
Purchaser shall be released from any such restriction on sale or transfer, such
release shall be implemented in accordance with such requirement or agreement
and the Company shall remove any related stop-transfer instructions.

      (b) Regulatory Requirements. The Purchaser agrees to (a) comply with any
lock-up and/or other requirements or restrictions of any kind imposed or
requested by the Securities and Exchange Commission (the "SEC") and/or NASDAQ or
any other market or exchange on which the Securities are to be listed or traded
(each, an "Exchange") in connection with any registration of the public offering
of any securities of the Company under the Act ("Regulatory Requirements"), and
(b) execute and deliver to the Company, and to the SEC and any relevant Exchange
(as the case may be), all agreements, documents and instruments necessary to
evidence such agreement to so comply ("Regulatory Compliance Documents"). The
Purchaser hereby authorizes the Company, and does hereby make, constitute and
appoint the Company and

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any officer, employee or agent of the Company with full power of substitution,
as the Purchaser's true and lawful attorney-in-fact with power, in its own name
or in the name of the Purchaser, to execute and deliver any such Regulatory
Compliance Documents as fully and effectually as the Purchaser might or could
do, and the Purchaser hereby ratifies all that such attorney-in-fact shall
lawfully do or cause to be done by virtue hereof. This power of attorney is
coupled with an interest and shall be irrevocable for as long as any Shares
shall be registered in the name of the Purchaser or any member or transferee of
the Purchaser. The Company may impose such stop-transfer instructions with
respect to Shares and other securities as may be necessary or advisable in order
to ensure compliance with Regulatory Requirements.

8. Registration Rights. The Company agrees to grant to the Purchaser with
respect to the Shares substantially the same registration rights as it may grant
with respect to any "Securities" (as defined in the Note) of the Company that
are purchased by any person or entity in a "Financing" (as such term is defined
in the Note) in which the outstanding principal amount of the Note (and the
outstanding principal amount(s) of any additional convertible promissory note(s)
of the Company purchased by the Purchaser) are converted into Securities.

9. Legends. The Note and certificates representing any Shares will each be
stamped or otherwise imprinted with legends as set forth in the form of Note
attached hereto as Exhibit A. Such legends shall be removed by the Company from
the Note, or any certificates representing the Shares, upon delivery to it of an
opinion of counsel that a registration statement under the Act is, at the time,
in effect with respect to the legended security or that such security can be
freely transferred without such registration statement being in effect and that
such transfer will not jeopardize the exemption or exemptions from registration
pursuant to which the Note was issued.

10. Modification and Waiver. No modification or waiver of any provision of this
Agreement or consent to departure therefrom shall be effective unless in writing
and signed by the Company and the Purchaser.

11. Notices. Any notice or report herein required or permitted to be given shall
be given by depositing the same in the United States mail, postage prepaid,
return receipt requested and addressed to the parties as follows:

(a)   To the Company:

      Real Time Strategies, Inc. d/b/a RTS Wireless
      51 East Bethpage Road
      Plainview, New York, New York  11803
      Attention: President

(b)   To the Purchaser:

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      c/o Scott A Ziegler
      Zevnik Horton Guibord McGovern Palmer & Fognani
      1330 Avenue of the Americas
      New York, New York  10019

      copy to:

      Scott A. Ziegler
      425 East 58th Street
      New York, New York  10022

or to such other place or places as either of the parties shall designate by
written notice to the other.

12. Assignment; Successors and Assigns. Neither Party may assign this Agreement,
in whole or in part, without the other party's prior written consent. Any
assignment in violation of this paragraph shall be void. Subject to the
forgoing, all covenants and agreements of the parties contained in this
Agreement shall be binding and inure to the benefit of their respective
successors and assigns.

13. Governing Law. This Agreement shall in all respects be governed by the laws
of State of New York, without reference to the conflicts or choice of law
principles thereof.

14. Section Headings. The section and paragraph headings contained herein are
for reference purposes only and shall not in any way affect the meaning and
interpretation of this Agreement.

15. Execution in Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be deemed an original, and all of which
together shall constitute a single instrument.

16. Expenses of Agreement. The parties to this Agreement shall each bear their
own expenses incurred in connection with the preparation, execution and delivery
of this Agreement, the Note and any other instruments and documents related
thereto, and shall be solely responsible for payments to their respective
counsel and accountants for all matters related to this transaction.

17. Survival. The representations, warranties, covenants and agreements made
herein shall survive the closing of the transactions contemplated herein.

18. Entire Agreement. This Agreement and Exhibits A and B hereto constitute the
full and entire understanding and agreement between the parties with regard to
the subject matter hereof and thereof.

19. Severability. In the event that any provision of this Agreement becomes or
is declared by a court of competent jurisdiction to be illegal, unenforceable or
void, this Agreement shall

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continue in full force and effect without such provision; provided that no such
severability shall be effective if it materially changes the economic benefit of
this Agreement to any party.

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

      REAL TIME STRATEGIES, INC. d/b/a RTS Wireless,
      a New York corporation

      By: /s/ Spencer Kravitz
          -------------------------
      Name: Spencer Kravitz
          -------------------------
      Title: Executive VP and COO
          -------------------------

      MONSOON VENTURES LLC,
      a New York limited liability company

      By: /s/ Scott A. Ziegler
          -------------------------
      Name: Scott A. Ziegler
          -------------------------
      Title: Managing Member
          -------------------------

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                                                                    Exhibit 10.7

                     NOTEHOLDERS AND STOCKHOLDERS AGREEMENT

            THE PARTIES TO THIS AGREEMENT, which is dated as of January 24th,
2000, are Real Time Strategies, Inc. d/b/a RTS Wireless, a New York corporation
(the "Company"), Monsoon Ventures LLC, a New York limited liability company
("Monsoon"), and each other individual or entity that is required to become a
party to this agreement pursuant to Section 11 hereof (Monsoon and such other
entities and individuals, each, a "Stockholder", and collectively, the
"Stockholders").

            Each Stockholder owns one or more of the following securities of the
Company: (a) Non-Negotiable Convertible Promissory Note of the Company dated
January 24, 2000 in favor of Monsoon in the original principal amount of
$3,500,000 (the "Promissory Note"), (b) such additional non-negotiable
convertible promissory notes (each, an "Additional Note") as the Company may
issue pursuant to applicable terms of the Note Purchase Agreement dated January
21, 2000 between the Company and Monsoon (the "Note Purchase Agreement"), (c)
such common stock of the Company ("Common Stock") as the Company may issue
pursuant to any conversion of the Note or any Additional Note and (d) such other
securities as the Company may issue pursuant to any Note or any Additional Note
(such owned securities, collectively, the "Securities"). The Company and each
Stockholder desire to promote their mutual interests by imposing certain
limitations on the transfer of the Securities owned or being acquired by the
Stockholder and Securities that may be acquired by the Stockholder from time to
time after the date of this agreement, whether by purchase directly from the
Company, by purchase from a third party or otherwise (all of the foregoing,
together with any security that is exercisable or exchangeable for, convertible
into or otherwise provides the holder with the right to acquire, directly or
indirectly, Securities, shall be included in the "Securities"), all upon the
terms and conditions set forth below.

            It is therefore agreed as follows:

            1. Certain Rights and Restrictions of each Stockholder.

            (a) Until the termination of this agreement in accordance with
Section 8 below, no Stockholder shall sell, assign, transfer, pledge,
hypothecate, mortgage, encumber, deliver, dispose of by gift or bequest or
otherwise transfer or dispose of (collectively, "Transfer") any right, title or
interest in any or all of its or his Securities, except as follows:

                  (i) Monsoon may Transfer Securities as permitted or required
            in the Note; and

                  (ii) each Stockholder may Transfer Securities in accordance
            with Sections 2, 3 or 4 below.

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            (b) Any purported Transfer in violation of this agreement shall be
null and void, and of no force or effect whatsoever.

            (c) As used in this agreement, a "person" shall mean any individual,
group, partnership, corporation, business trust, joint stock company, trust,
unincorporated association, joint venture or other entity of whatever nature.

            2. Involuntary Transfers of Securities. In the event of any
Involuntary Transfer (as hereinafter defined below) by a Stockholder of any
Securities, the following procedures shall apply:

            (a) If the Stockholder (the "Transferor") is deprived or divested of
Securities by an Involuntary Transfer, he shall promptly give written notice of
such Transfer in reasonable detail to the Company. The person or persons (the
"Transferee") who take or propose to take any interest in the Securities subject
or proposed to be subject to such Involuntary Transfer (the "Subject
Securities") shall hold such interest subject to the rights of the Company as
set forth below.

            (b) Upon receipt of the notice referred to in section 2(a) above or
upon discovery of such Involuntary Transfer, the Company (and its designees)
shall have the irrevocable option, exercisable by written notice (specifying the
number of Subject Securities to be purchased) to the Transferor within 60 days
following the receipt of such notice, but not the obligation, to purchase the
Subject Securities, subject to the terms set forth herein. The Company and/or
any of its designees may exercise the option for all or any part of the Subject
Securities. The closing of any such sale of Subject Securities to the Company or
any of its designees, as the case may be, shall be at the offices of the Company
not later than 30 days after the date of the notice pursuant to which the
Company or any of such designees, as the case may be, exercised the option
pursuant to Section 2(b). The purchase price per share of any Subject Securities
purchased pursuant to this Section 2 shall be an amount equal to the fair market
value as of the Valuation Date (as defined below) of the Subject Securities, as
such fair market value is determined in good faith by the Board of Directors of
the Company. The purchase price shall be paid in 36 equal monthly installments,
without interest, the first such installment to be paid 30 days after the
closing of the sale. The "Valuation Date" shall be the last day of the calendar
quarter immediately preceding the Involuntary Transfer.

            (c) In the event that the Company and designees do not purchase all
of the Subject Securities involved in an Involuntary Transfer pursuant to this
section 2, the Transferee shall take and hold all rights and interests in any
Subject Securities not so purchased and shall execute a copy of this agreement
and deliver the same to the Company, and be bound by the provisions hereof with
the same rights and obligations as the Stockholder.

            (d) For purposes of this agreement, the term "Involuntary Transfer"
shall mean any involuntary Transfer by or in which the Stockholder shall be
deprived or divested of any right, title or interest in or to any Securities,
including, without limitation, any levy of execution,

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transfer in connection with bankruptcy, reorganization, insolvency or similar
proceedings or any Transfer to a public officer or agency pursuant to any
abandoned property or escheat law.

            3. Certain Rights to Cause Sale of Securities of Stockholder.

            (a) Subject to the last sentence of this Section 3(a), if at any
time the holders of at least a majority of the issued and outstanding Common
Stock (the "Controlling Stockholders") determine to Transfer not less than a
majority of their Securities in a bona fide arms-length transaction to any third
person or persons, whether such Transfer involves a sale, merger, consolidation,
reorganization or other Transfer transaction (excluding any reincorporation of
the Company in Delaware) (a "Sale Transaction"), such Controlling Stockholders
shall have the right (exercisable by the giving of notice to the Company of the
exercise of such right), but not the obligation, to require each Stockholder to
also transfer in the Sale Transaction (and deliver certificates therefor with
duly executed stock transfer powers) the same proportion of his or its
Securities as the Controlling Stockholders are selling in the Sale Transaction,
free and clear of all claims, liens and encumbrances; provided, that each
Stockholder shall make appropriate and customary representations, warranties,
covenants and indemnifications in such Sale Transaction as are requested by the
Controlling Stockholders (but not more onerous than the representations,
warranties, covenants and indemnifications of such Controlling Stockholders).
Notwithstanding the foregoing or any other subsection of this Section 3, (i) no
Stockholder shall have any obligation under this Section 3 to effectuate any
such Transfer of his or its Securities (or any portion thereof) with respect to
any Sale Transaction unless the Stockholders (collectively) receive in
connection with such Sale Transaction aggregate cash consideration (or
reasonably liquid securities having a market value) in an amount sufficient to
constitute a return of at least one hundred fifty (150%) percent (on an
annualized basis) on the aggregate principal amount of the Note and any
Additional Notes that were converted into Securities and (ii) to the extent that
a Sale Transaction does not require or cause the conversion of the Promissory
Note or any Additional Note (or the conversion of such portion thereof as would
be required to be transferred pursuant to this Section 3(a)) into Common Stock
or other securities of the Company, the Company may at its option pay the holder
of such Promissory Note or Additional Note the outstanding principal balance
thereof (or the outstanding principal balance relating to such portion thereof)
in cash, together with applicable accrued and unpaid interest, upon the Closing
of such Sale Transaction or within ten (10) days thereafter.

            (b) If the Controlling Stockholders exercise their right pursuant to
section 3(a) by giving the Company written notice of such exercise, the Company
shall cause to be delivered to each Stockholder written notice of such exercise
not later than 15 days before the proposed date of closing of the Sale
Transaction.

            (c) By execution of this agreement, each Stockholder hereby
irrevocably appoints each of the Company's Chairman, Chief Executive Officer,
President and Secretary and any Assistant Secretary, acting singly, as his or
its attorney-in-fact, with full power of substitution, to execute and deliver
all documents necessary to effect the Transfer of his or her Securities in
accordance with this Section 3.

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            (d) In the event of a proposed Sale Transaction as described in
Section 3(a), each Stockholder shall in all events be required to deliver the
required proportion of his or its Securities to the buyer at the closing of the
sale regardless of whether there is any dispute between the Company and any
Stockholder or between any Stockholder and any of the other stockholders of the
Company. Any such dispute shall be resolved after the closing and shall in no
event delay the closing.

            (e) In addition to the agreements contained in Section 12, the
parties hereto agree to cooperate fully with each of the other parties hereto
and to take such actions as shall be reasonably requested by any other party
hereto in order fully to effectuate the terms of this agreement.

            (f) The Controlling Stockholders shall be intended third party
beneficiaries of the obligations of the Stockholders and the Company under this
Section 3 and shall be entitled to enforce the provisions of this Section 3
directly against the Stockholders and the Company.

            4. Procedures on Sale of Securities to Third Parties. Except as
otherwise provided herein, each Stockholder and each transferee of a Stockholder
required to become a party to this agreement agrees that during the term of this
agreement, it or he shall not Transfer any Securities except in accordance with
the following procedures:

            (a) The Stockholder desiring to Transfer (the "Selling Stockholder")
must have first received a written bona fide offer from a third party with
respect to the purchase of all of the Securities owned by such Selling
Stockholder, and such Selling Stockholder shall deliver to the Company and to
each of the other stockholders of the Company (the "Other Stockholders") a
written notice (the "Offer Notice"), which shall include a copy of the third
party offer and the following materials and information, certified by such
Selling Stockholder to be true and correct: (i) the name and address of the
proposed purchaser, (ii) the number of Securities desired to be sold, (iii) the
total purchase price agreed to be paid by the proposed purchaser for the
Securities and the terms of payment, (iv) the proposed closing date for such
sale, (v) a statement that the proposed sale is bona fide and has been entered
into good faith and not with the intention of inducing the Company or the Other
Stockholders to purchase all or any of the Securities and (vi) a statement by
the Selling Stockholder that there are no proposed arrangements or
understandings with the prospective purchaser which have not been disclosed to
the Company and the Other Stockholders which might have the effect of increasing
or decreasing the purchase price offered by the prospective purchaser for the
Securities. The Offer Notice shall constitute an irrevocable offer by the
Selling Stockholder to sell to the Company or to the Other Stockholders the
Securities proposed to be sold by the Selling Stockholder at the purchase price
and on the other terms specified in the such third party offer.

            The Company shall have the right and option, for a period of ten
(10) days after its receipt of the Offer Notice, to give the Selling Stockholder
a notice of acceptance of all of the Securities so offered at the purchase price
and on the terms stated in the Offer Notice.

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            In the event the Company does not exercise its right to purchase all
of such Securities, the Other Stockholders shall have the right and option, for
a period of twelve (12) days after the end of the Company's option period, to
give the Selling Stockholder a notice of acceptance of all of the Securities so
offered at the purchase price and on the terms stated in the Offer Notice.
Initially, each Other Stockholder shall have the right to purchase its or his
Pro-Rata Share (as defined below) of the offered Securities. The Other
Stockholders shall also have successive over-allotment rights as to any shares
not purchased by any Other Stockholder, so that if any Other Stockholder fails
to accept all of the Securities that it or he is entitled to purchase within six
(6) days after the beginning of the fifteen-day period referred to in the first
sentence of this paragraph, the remaining Other Stockholders who agree to
purchase its or his Pro-Rata Share may purchase such portion by giving notice
thereof to the Company and the non-purchasing Other Shareholder within five (5)
days after the non-purchasing Other Stockholder fails to exercise its or his
rights hereunder to purchase all of the Securities that it or he may purchase.
The right of the Other Stockholders to purchase the Securities hereunder shall
not be effective unless the Other Stockholders shall have agreed to purchase all
and not less than all of the Securities offered by the Selling Stockholder. "Pro
Rata Share" shall mean, as to each Other Stockholder, the percentage which
expresses the ratio of (x) the number of shares of outstanding common stock of
the Company owned by such Other Stockholder divided by (y) the aggregate number
of shares of such common stock owned by all of the Other Stockholders.

            (b) The closings of sales of Securities under Section 4(a) above
shall take place at the offices of the Company on a mutually satisfactory
Business Day within eight (8) days after notice of acceptance is given by the
Company or the Other Stockholders (as the case may be) pursuant to Section 4(a).
Delivery of certificates or other instruments evidencing such Securities duly
endorsed for transfer to the Company or the Other Stockholder(s) (as the case
may be) shall be made on such date against payment of the purchase price
therefor.

            (c) If effective acceptance is not received pursuant to Section 4(a)
above with respect to all Securities offered for sale by the Selling
Stockholder, then the Selling Stockholder may Transfer all of the Securities
offered for sale at a price not less than the price, and on terms not more
favorable to the purchaser thereof than the terms, stated in the original third
party offer at any time within forty-five (45) days after the expiration of the
option period of the Other Stockholders as required by Section 4(a) above. In
the event all of the Securities are not sold by the Selling Stockholder during
such forty-five day period, the right of the Selling Stockholder to Transfer
such Securities shall expire and the obligations of this Section 4 shall be
reinstated with respect to all of such Securities.

            (d) Anything contained herein to the contrary notwithstanding, any
purchaser of Stock pursuant to this Section 4 shall, as a condition precedent to
such purchase, agree in writing to be bound by all of the provisions of this
agreement to the same extent as such purchaser's transferor, and such purchaser
shall be deemed a Stockholder for all purposes of this agreement.

                                       5
<PAGE>

            5. Reclassification. In the event that any Securities should, as a
result of a stock split or stock dividend or combination of shares or any other
change or exchange for other securities by reclassification, reorganization,
redesignation, merger, consolidation, recapitalization, split-up, spinoff,
partial or complete liquidation, sale of assets, distribution to stockholders,
combination of shares or otherwise, be increased or decreased or changed into or
exchanged for a different number or kind of shares of capital stock or other
securities of the Company or of another corporation, the terms and provisions of
this agreement shall apply to all of the capital stock of any class of the
Company now owned or that may be issued hereafter to any Stockholder in
consequence of any such event.

            6. Purchase for Investment; Legend on Certificate. All of the
Securities held, being acquired or to be held or acquired by each Stockholder
have been, are being, and will be acquired for investment and not with a view to
the distribution thereof and no Transfer of the Securities may be made except in
compliance with this agreement and applicable federal and state securities laws.
All the stock certificates for such Securities now or hereafter owned by the
Stockholder shall have indorsed in writing, stamped or printed, upon the back
thereof, the following legend (or a legend of similar effect):

            "THIS CERTIFICATE AND THE SECURITIES REPRESENTED HEREBY ARE SUBJECT
            TO AND TRANSFERABLE ONLY IN ACCORDANCE WITH THE PROVISION OF A
            STOCKHOLDERS AGREEMENT, DATED JANUARY 24, 2000. A COPY OF THAT
            AGREEMENT, AS IT MAY BE AMENDED FROM TIME TO TIME, IS MAINTAINED
            WITH THE CORPORATE RECORDS OF THE COMPANY AND IS AVAILABLE FOR
            INSPECTION AT THE EXECUTIVE OFFICES OF THE COMPANY."

            "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
            REGISTERED UNDER THE SECURITIES ACT OF 1933 OR UNDER ANY STATE
            SECURITIES OR BLUE SKY LAWS AND MAY NOT BE TRANSFERRED IN THE
            ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SUCH
            ACT OR UNDER SUCH STATE SECURITIES OR BLUE SKY LAWS."

            7. Voting of Securities.

            (a) Number and Choice of Directors. Throughout the term of this
agreement, each Stockholder shall vote all of his or its Securities (or execute
a consent with respect thereto) and take all other necessary or desirable
actions (in his or its capacity as a shareholder of the Company) as are
necessary to cause the Company's Board of Directors to consist of a number of
members as designated by the Controlling Stockholders, with the identity of all
such members as designated by the Controlling Stockholders. Directors may be
removed only by the direction of the Controlling Stockholders and any vacancies
shall be likewise filled by the designees of the Controlling Stockholders.

                                       6
<PAGE>

            (b) Voting of Securities. Each Stockholder shall vote (or execute a
consent with respect to) any and all Securities over which it or he may exercise
voting power in favor of (i) the election as a director of each individual who
is from time to time designated in accordance with subparagraph (a) above, (ii)
in favor of such other actions which may require the approval of the
Stockholders in accordance with the directions of the Controlling Stockholders
and (iii) such other actions as shall give effect to the provisions of this
Section 7 (or prevent circumvention of such provisions).

            (c) Proxy. To effect the above provisions, each Stockholder hereby
irrevocably appoints the Controlling Stockholders, in each specific instance in
which the direction of the Controlling Stockholders is required, with respect to
all of his or its Securities, with full powers of substitution, as attorney and
proxy to (i) attend any and all meetings of shareholders of the Company, (ii) to
exercise any and all voting rights with respect to the elections of directors
pertaining to its or his Securities; (iii) to grant or withhold any and all
written consents with respect to his or its Securities on the matter of election
of directors, (iv) to exercise any and all voting rights with respect to any
matter requiring shareholder approval or action, (v) to grant or withhold any
and all written consents with respect to any matter requiring shareholder
approval and (vi) to represent and otherwise act for the Stockholder in the
matters specified in (i) - (v) above, in the same manner and with the same
effect as if such Stockholder was personally present. The proxy shall be deemed
to be coupled with an interest, and is irrevocable throughout the term of this
agreement and shall not be terminated by operation of law or upon the occurrence
of any event.

            (d) Voting Procedures. Any time the direction of the Controlling
Stockholders is necessary or permitted under law pursuant to this Section 7,
then written notice shall be sent by the Company to each Stockholder six (6)
Business Days (as defined below) prior to the date such direction is required or
permitted under law, such notice setting forth the matter to which the
Controlling Stockholders' direction will pertain. The Controlling Stockholders
shall then issue a direction in writing pertaining to such matter and file such
direction with the Secretary of the Company, and a copy of this notice shall be
forwarded to each Stockholder. If no direction of the Controlling Stockholders
is issued with respect to any matter for which a vote of Stockholders or written
consent is required or permitted under law at least three (3) Business Days
prior to the date by which a vote is to be taken or the grant or withholding of
consent may be made, then each Stockholder will be entitled to vote, or grant or
withhold consent, in accordance with the percentage of Securities entitled to
vote or grant or withhold consent on such matter, which it or he holds at such
time. "Business Day" shall mean a calendar day, except Saturdays, Sundays and
legal holidays in the State of New York.

            8. Termination of Agreement. Notwithstanding anything to the
contrary contained herein, this agreement shall automatically and without
further action terminate, to the extent provided below:

            (a) at such time as the Company shall consummate an underwritten
public offering of the Company's equity securities pursuant to a registration
statement that has been filed under

                                       7
<PAGE>

the Securities Act of 1933 and declared effective by the Securities and Exchange
Commission but not to include, for this purpose, any offering under Rule 144A or
any similar rule or regulation, this entire agreement shall terminate, or

            (b) each of Sections 1, 2, 3 and 4, respectively, of this agreement
shall terminate if and to the extent that the investors in any Financing (as
defined in the Note) do not enter into agreements with the Company containing
provisions substantially similar to such Sections 1, 2, 3 and 4 of this
agreement; provided, however, that notwithstanding any such termination the
remainder of this agreement (including any of such Sections 1, 2, 3 and 4 for
which a substantially similar provision is included in such agreements with such
investors) shall survive in its entirety and continue to be fully enforceable by
the Company in accordance with its terms.

Any such termination shall be without prejudice, however, to any liabilities for
breach of this agreement that may have accrued prior to such termination.

            9. Certain Prohibited Transfers. Each Stockholder represents,
warrants and covenants that each transferee to whom Monsoon transfers or assigns
any Securities as permitted or required in the Note is and shall at all times be
an individual (i.e., natural person) resident in the United States, or shall at
all times meet such other applicable requirements, such that upon such transfer
or assignment and thereafter the Company shall not suffer the loss of its status
as a Subchapter S corporation under the Internal Revenue Code, unless the
Company shall give its consent in writing otherwise.

            10. Specific Performance. Inasmuch as the Securities cannot be
readily purchased or sold in the open market and the parties hereto desire to
impose certain restrictions on transfers of the Securities, irreparable damage
will result in the event that this agreement is not specifically enforced and
the parties hereto agree that any damages available at law for a breach of this
agreement would not be an adequate remedy. Therefore, the provisions hereof and
the obligations of the parties hereunder shall be enforceable in a court of
equity, or other tribunal having jurisdiction, by a decree of specific
performance, and appropriate injunctive relief may be applied for and granted in
connection therewith. Such remedies and all other remedies provided for in this
agreement shall, however, be cumulative and not exclusive and shall be in
addition to any other remedies which any party may have under this agreement or
otherwise.

            11. Additional Stockholders. Subject to the restrictions on
transfers of Securities contained herein, any person or entity required to
become a party to this agreement in connection with the acquisition of
Securities from a Stockholder or a successor thereto, shall, on or before the
transfer or issuance to it of Securities, sign the signature page hereto and
shall thereby become a party to this agreement. As a party to this agreement,
each holder of Securities shall be bound by this agreement and shall hold such
Securities with all rights conferred, and subject to all of obligations and
restrictions imposed, hereunder.

                                       8
<PAGE>

            12. Action Necessary to Effectuate the Agreement. The parties hereto
agree to take or cause to be taken all such corporate and other action as may be
necessary to effect the intent and purposes of this agreement.

            13. Miscellaneous.

            (a) Notices. All notices, instructions and other communications in
connection with this agreement shall be in writing and may be given by (i) fax
(with evidence of receipt) followed by letter or other delivery, (ii) personal
delivery or (iii) by a nationally recognized overnight courier in each case to
the parties at the address of the Company as follows, and at the address of the
Stockholder as set forth below (or at such other address as the Company or the
Stockholder may specify in a notice to the Company):

If to the Company:

            Real Time Strategies, Inc. d/b/a RTS Wireless
            51 East Bethpage Road
            Plainview, New York, New York  11803
            Attention: President
            Fax: (516) 939-6189

If to Monsoon:

            c/o Scott A Ziegler
            Zevnik Horton Guibord McGovern Palmer & Fognani
            1330 Avenue of the Americas
            New York, New York  10019
            Fax: (212) 407-0606

with a copy to:

            Scott A. Ziegler
            425 East 58th Street
            New York, New York  10022
            Fax: (212) 319-7605

If to another Stockholder:

            To the address and fax number set forth on the signature page to
            this agreement executed and delivered to the Company by such
            Stockholder

            (b) No Waiver. No course of dealing and no delay on the part of any
party hereto in exercising any right, power or remedy conferred by this
agreement shall operate as a waiver thereof or otherwise prejudice such party's
rights, powers and remedies conferred by this

                                       9
<PAGE>

agreement or shall preclude any other or further exercise thereof or the
exercise of any other right, power and remedy.

            (c) Binding Effect; Assignability. This agreement shall be binding
upon and, except as otherwise provided herein, shall inure to the benefit of the
respective parties and their permitted successors and assigns. This agreement
shall not be assignable except as otherwise provided herein.

            (d) Severability. Any provision of this agreement that is prohibited
or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction. To the extent permitted
by applicable law, the parties hereby waive any provision of law which renders
any provisions hereof prohibited or unenforceable in any respect.

            (e) Modification. No term or provision of this agreement may be
amended, altered, modified, rescinded or terminated except upon the express
written consent of the party against whom the same is sought to be enforced.

            (f) Law Governing. This agreement shall be governed by and construed
in accordance with the laws of the state of New York, without reference to the
conflicts or choice of laws principles thereof.

            (g) Counterparts. This agreement may be executed in one or more
counterparts each of which shall be deemed an original but all of which together
shall constitute one and the same instrument, and all signatures need not appear
on any one counterpart.

            (h) Headings. All headings and captions in this agreement are for
purposes of reference only and shall not be construed to limit or affect the
substance of this agreement.

               [The rest of this page is left intentionally blank]

                                       10
<PAGE>

            (i) Entire Agreement. This agreement contains, and is intended as, a
complete statement of all the terms of the arrangements between the parties with
respect to the matters provided for, supersedes any previous agreements and
understandings between the parties with respect to those matters and cannot be
changed or terminated orally.

                             REAL TIME STRATEGIES, INC. d/b/a RTS Wireless,
                             a New York corporation

                             By: /s/ Spencer Kravitz
                                 -----------------------------------
                                 Name:  Spencer Kravitz
                                 Title: Executive VP and COO

                             MONSOON VENTURES LLC,
                             a New York limited liability company

                             By: /s/ Scott A. Ziegler
                                 ------------------------------------
                                 Name:  Scott A. Ziegler
                                 Title: Managing Member

                                       11

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