Document:

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                                                                    EXHIBIT 10.9

                              EMPLOYMENT AGREEMENT

AGREEMENT, effective as of the 21st day of February, 2001 by and between i3
MOBILE, INC., a Delaware corporation with principal executive offices at 181
Harbor Drive, Stamford, Connecticut 06902 ("i3 Mobile"), and JOHN MCMENAMIN,
residing at 9 Colonial Court, New Canaan, CT 06840 ("McMenamin").

                              W I T N E S S E T H :

WHEREAS, i3 Mobile is desirous of employing McMenamin as Executive Vice
President, Sales of i3 Mobile and McMenamin is desirous of serving in such
capacity for i3 Mobile, all upon the terms and subject to the conditions
hereinafter provided.

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein
contained, the parties hereto, intending to be legally bound, agree as follows:

1.      EMPLOYMENT

i3 Mobile agrees to employ McMenamin, and McMenamin agrees to be employed by i3
Mobile, upon the terms and subject to the conditions of this Agreement.

2.      TERM

The employment of McMenamin by i3 Mobile as provided in Section 1 will be for a
period of two (2) years commencing on the date hereof, unless sooner terminated
as hereinafter provided (the "Term"), and shall automatically renew from year to
year thereafter unless either party gives at least ninety (90) days prior
written notice of termination. McMenamin understands and accepts that all terms
contained herein are subject to the formal written ratification and approval of
the Compensation Committee and/or the Board of Directors of i3 Mobile.

3.      DUTIES; BEST EFFORTS; INDEMNIFICATION

McMenamin shall serve as Executive Vice President, Sales of i3 Mobile and shall
perform, subject to the policy directions of the President and Chief Executive
Officer and the Board of Directors of i3 Mobile, such duties as are customarily
performed by the Executive Vice President, Sales. McMenamin shall also have such
other powers and duties as may be from time to time prescribed by the President
and Chief Executive Officer or the Board of Directors of i3 Mobile, provided
that the nature of McMenamin's powers and duties so prescribed shall not be
inconsistent with McMenamin's position and duties hereunder.

McMenamin shall devote his business time, attention and energies to the business
and affairs of i3 Mobile, shall use his best efforts to advance the best
interests of i3 Mobile and shall not, during the Term, be actively engaged in
any other business activity, whether or not such business activity is pursued
for gain, profit or other pecuniary advantage, that will interfere with the
performance by McMenamin of his duties hereunder or McMenamin's availability to
perform such duties or that will adversely affect, or negatively reflect upon,
i3 Mobile.

Subject to the provisions of i3 Mobile's Certificate of Incorporation and
Bylaws, each as amended from time to time, i3 Mobile shall indemnify McMenamin
to the fullest extent permitted by the General Corporation Law of the State of
Delaware, as amended from time to time, for all amounts (including,

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without limitation, judgments, fines, settlement payments, expenses and
attorney's fees) actually and reasonably incurred or paid by McMenamin on a
when- and as-incurred basis in connection with any action, suit, investigation
or proceeding arising out of or relating to the performance by McMenamin of
services for, or the acting by McMenamin as a director, officer, or employee of,
i3 Mobile, or any other person or enterprise at i3 Mobile's request if McMenamin
acted in good faith and in a manner he reasonably believed to be in or not
opposed to the best interests of i3 Mobile, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe his conduct was
unlawful. i3 Mobile shall use its best efforts to obtain and maintain in full
force and effect during the Term directors' and officers' liability insurance
policies providing full and adequate protection to McMenamin for his capacity,
provided that the Board of Directors of i3 Mobile shall have no obligation to
purchase such insurance if, in its opinion, coverage is available only on
unreasonable terms. McMenamin agrees that, if it is finally judicially
determined or finally determined by an arbitrator that he is not or was not
entitled to any amounts paid on his behalf or for which he has been reimbursed
under this third paragraph of this Section 3 by virtue of having failed to have
met the standards set forth in the first sentence of this third paragraph of
this section 3, McMenamin shall promptly reimburse i3 Mobile for such amounts.

4.      PLACE OF PERFORMANCE

In connection with his employment by i3 Mobile, McMenamin shall be based at the
principal executive offices of i3 Mobile which shall be in the New York
Metropolitan area.

5.      COMPENSATION

(a)     Base Salary. i3 Mobile shall pay McMenamin a base salary (the "Base
Salary") at a rate of not less than $250,000 per annum, payable in equal
semi-monthly installments during the Term. The President and Chief Executive
Officer of i3 Mobile at least annually will review the Base Salary and other
compensation during the Term with a view to increase thereof based upon then
prevailing industry salary scales for equivalently valued businesses for the
Executive Vice President, Sales position, McMenamin's performance, the
performance of i3 Mobile, inflation and other relevant factors.

(b)     Out-of-Pocket Expenses. i3 Mobile shall promptly pay to McMenamin the
reasonable expenses incurred by him in the performance of his duties hereunder,
including, without limitation, those incurred in connection with business
related travel or entertainment, or, if such expenses are paid directly by
McMenamin, shall promptly reimburse him for such payment, provided that
McMenamin properly accounts therefor in accordance with i3 Mobile's policy. i3
Mobile shall provide McMenamin with a corporate credit card to be used with
respect to the foregoing expenses.

(c)     Participation in Benefit Plans. McMenamin shall be eligible to
participate in the current i3 Mobile health, accident, life and disability
insurance, pension, profit sharing, stock option, stock purchase plans or
arrangements. McMenamin shall also be entitled to participate in any other
employee benefit plan or arrangement made available in the future by i3 Mobile
to its executives and key management employees.

(d)     Vacation. McMenamin shall be entitled to paid vacation days in each
calendar year determined by i3 Mobile from time to time, in accordance with i3
Mobile's standard vacation policy, prorated in any calendar year during which
McMenamin is employed hereunder for less than an entire year in accordance with
the number of days in such year during which he is so employed. McMenamin shall
also be entitled to all paid holidays given by i3 Mobile to its executives and
key management employees.

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(e)     Incentive Compensation. i3 Mobile shall pay McMenamin a signing bonus
(the "Signing Bonus") of $25,000 within one (1) week of the signing of this
Agreement. i3 Mobile shall also pay McMenamin a performance bonus (the
"Performance Bonus") which shall be determined by the President and Chief
Executive Officer of i3 Mobile, in addition to and separate from his Base Salary
and subject to the achievement of certain mutually agreed upon performance
goals, in an amount up to $150,000. McMenamin shall be entitled to the
Performance Bonus on a pro-rata basis for partial achievement of the performance
goals.

(f)     Automobile. i3 Mobile shall provide McMenamin with exclusive use of an
automobile for business purposes during the Term. i3 Mobile shall pay the cost
of the monthly lease for this automobile which amount shall not exceed $650 per
month. McMenamin shall be responsible for all other automobile related expenses
including, without limitation, insurance, gasoline, scheduled maintenance and
repairs.

(g)     Stock Options. i3 Mobile shall grant to McMenamin stock options
("Options") under its 2000 Stock Incentive Plan, as amended, to acquire 250,000
shares of i3 Mobile's Common Stock at an exercise price equal to $2.00 per
share, the closing price of i3 Mobile's common shares on February 20, 2001. The
Options shall vest one-third on the twelve month anniversary of the date hereof,
one-third on the twenty-four month anniversary of the date hereof and one-third
on the thirty-six month anniversary of the date hereof as reflected on a
separate Incentive Stock Option Grant Agreement.

6.      TERMINATION

McMenamin's employment hereunder shall be terminated upon McMenamin's death and
may be terminated as follows:

(a)     By i3 Mobile for "Cause." For purposes of this Agreement, a termination
for Cause shall occur if McMenamin has (i) willfully failed to comply with any
of the material terms of this Agreement, (ii) willfully and repeatedly failed to
perform his duties hereunder, (iii) engaged in gross misconduct materially
injurious to i3 Mobile or (iv) been convicted of, or pleaded nolo contendere to,
a felony or a crime of moral turpitude; provided, however, that McMenamin shall
receive thirty (30) days' advance written notice specifying the actions
constituting Cause and McMenamin shall not have cured the actions constituting
Cause during such thirty (30) day period.

(b)     By i3 Mobile due to McMenamin's "Disability." For purposes of this
Agreement, a termination for Disability shall occur (i) upon the thirtieth
(30th) day after i3 Mobile has provided a written termination notice to
McMenamin supported by a written statement from a reputable independent
physician to the effect that McMenamin shall have become so incapacitated as to
be unable to resume, within the ensuing twelve (12) months, his employment
hereunder by reason of physical or mental illness or injury, or (ii) upon
rendering of a written termination notice by i3 Mobile after McMenamin has been
unable to substantially perform his duties hereunder for six (6) consecutive
months or for nine (9) months in any twelve (12) month period (exclusive of any
vacation permitted under Section 5(f) hereof) by reason of any physical or
mental illness. For purposes of this Section 6(b), McMenamin agrees to make
himself available and to cooperate in any reasonable examination by a reputable
independent physician retained by i3 Mobile.

(c)     By McMenamin for "Good Reason upon Change in Control." For purposes of
this Agreement, "GOOD REASON" shall mean any of the following that occurs
coincident with or following a Change in Control, if not cured and corrected by
i3 Mobile or its successor within ten business days after written notice thereof
by McMenamin to i3 Mobile or its successor: (i) any change in McMenamin's title
or position that constitutes a material diminution in authority as compared to
the authority of

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McMenamin's title or position immediately prior to the occurrence of the Change
in Control; (ii) any material reduction in McMenamin's annual base salary as in
effect on the effective date of the Change in Control; (iii) the relocation of
the principal executive offices of i3 Mobile in excess of fifty (50) miles from
their present location not consented to by McMenamin, or (iv) a substantial
diminution in the McMenamin's duties and responsibilities (other than a change
due to McMenamin's Total and Permanent Disability or as an accommodation under
the Americans With Disabilities Act); provided, however, that no diminution of
title, position, duties or responsibilities shall be deemed to occur solely
because i3 Mobile becomes a subsidiary of another corporation or entity or
because there has been a change in the reporting hierarchy incident thereto
involving McMenamin. "CHANGE IN CONTROL" means: (i) the effective date of any
merger, share exchange, consolidation or other reorganization or business
combination of i3 Mobile if immediately after such transaction either (A)
persons who were directors of i3 Mobile immediately prior to such transaction do
not constitute at least a majority of the directors of the surviving entity, or
(B) persons who hold a majority of the outstanding voting securities entitled to
vote generally in the election of directors of the surviving entity are not
persons who held a majority of the voting capital stock of i3 Mobile immediately
prior to such transaction; (ii) the closing of a sale or conveyance of all or
substantially all of the assets of i3 Mobile; (iii) an acquisition (other than
from i3 Mobile) in a transaction or a series of related transactions by any
person, entity or "group," within the meaning of Section 13(d)(3) or 14(d)(2) of
the Securities Exchange Act of 1934 (the "EXCHANGE ACT"), (excluding for this
purpose, (A) i3 Mobile or its subsidiaries, (B) any employee benefit plan of i3
Mobile or its subsidiaries which acquires beneficial ownership of voting
securities of i3 Mobile, (C) an underwriter temporarily holding securities
pursuant to an offering of such securities, or (D) any corporation owned,
directly or indirectly, by the stockholders of i3 Mobile in substantially the
same proportions as their ownership of the then outstanding voting securities of
i3 Mobile entitled to vote generally in the election of directors) of beneficial
ownership, within the meaning of Rule 13d-3 promulgated under the Exchange Act,
of 50% or more of either the then outstanding shares of common stock or the
combined voting power of i3 Mobile's then outstanding voting securities entitled
to vote generally in the election of directors; (iv) individuals who were the
Board's nominees for election as directors immediately prior to a meeting of the
stockholders of i3 Mobile involving an actual or threatened election contest
relating to the election of the directors of i3 Mobile, as such terms are used
in Rule 14a-11 of Regulation 14A promulgated under the Exchange Act, cease to
constitute a majority of the Board following the election; or (v) the
dissolution or liquidation of i3 Mobile.

(d)     By McMenamin for "Change of CEO." For purposes of this Agreement, a
"Change of CEO" shall occur only if the Board of Directors of i3 Mobile
unilaterally relieves John A. Lack of his duties as CEO of i3 Mobile. McMenamin
shall have ten (10) days from the effective date of the aforesaid action to
exercise his right to terminate under this Section 6(d). This provision shall
not apply in the event John A. Lack either voluntary resigns his position or is
terminated for Cause. This provision shall apply to no CEO other than John A.
Lack.

7.      COMPENSATION UPON TERMINATION

(a)     In the event of the termination of McMenamin's employment as a result of
McMenamin's death, i3 Mobile shall (i) pay to McMenamin's estate his Base Salary
and Performance Bonus through the date of his death and (ii) for twelve (12)
months following his death (as if such termination had not occurred) provide
continuation coverage to the members of McMenamin's family under all major
medical and other health, accident, life or other disability plans and programs
in which such family members participated immediately prior to his death.

(b)     In the event of the termination of McMenamin's employment by i3 Mobile
for Cause or by McMenamin other than for Good Reason upon Change in Control, i3
Mobile shall pay to McMenamin his

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Base Salary and accrued Performance Bonus through the date of his termination,
and McMenamin shall have no further entitlement to any other compensation or
benefits from i3 Mobile.

(c)     In the event of the termination of McMenamin's employment by i3 Mobile
due to Disability, i3 Mobile shall pay to McMenamin his Base Salary and accrued
Performance Bonus through the date of his termination. In addition, for twelve
(12) months following any such termination, i3 Mobile shall (i) continue to pay
McMenamin the Base Salary in effect at the time of such termination less the
amount, if any, then payable to McMenamin under any disability benefits of i3
Mobile and (ii) provide McMenamin continuation coverage under all major medical
and other health, accident, life or other disability plans and programs in which
McMenamin participated immediately prior to such termination.

(d)     In the event that McMenamin's employment is terminated (i) by i3 Mobile
other than (A) as a result of McMenamin's death or (B) for reasons specified in
Section 6(a) or (b) or (ii) by McMenamin for Good Reason upon Change in Control
or upon Change of CEO, i3 Mobile shall continue to pay to McMenamin (1) if
McMenamin's employment is terminated before January 1, 2002 his Base Salary for
twelve (12) months following any such termination or (2) if McMenamin's
employment is terminated on or after January 1, 2002 his Base Salary and
Performance Bonus for twelve (12) months following any such termination and, in
either case, provide McMenamin continuation coverage under all major medical and
other health, accident, life or other disability plans or programs in which
McMenamin participated immediately prior to such termination and continue all
automobile lease payments specified in Section 5(f) for the same period.
Notwithstanding the foregoing, the amounts otherwise payable to McMenamin
pursuant to this Section 7(d) shall be subject to reduction (but not below zero)
to the extent determined necessary by i3 Mobile to prevent any payments or
benefits to or for the benefit of McMenamin (whether pursuant to this Agreement
or any other plan, arrangement or agreement) from being treated as a "parachute
payment" under Section 280G of the Internal Revenue Code of 1986, as amended. In
the event that McMenamin's employment is terminated by McMenamin for Good Reason
upon Change in Control or Change of CEO, all stock options and other equity
incentive awards granted to McMenamin by i3 Mobile shall immediately fully vest
on an accelerated basis and be exercisable for a 30-day period following the
occurrence of the event comprising Good Reason upon Change in Control or Change
of CEO.

(e)     If McMenamin disputes the termination of his employment by i3 Mobile
pursuant to Section 6(a) or 6(b) herein and such dispute results in a final
determination to the effect that i3 Mobile did not have a proper basis for such
termination, i3 Mobile shall promptly pay to McMenamin all payments McMenamin
would have been entitled to receive had his employment hereunder had not been
improperly terminated; provided, however, that any payments or benefits under
this Section 7(e) shall be reduced by the amount of any payments or benefits
provided under any other provision of Section 7 hereof.

(f)     The continuation coverage under any major medical and other health,
accident, life or other disability plans and programs for the periods provided
in Section 7(a), 7(c) and 7(d) shall be provided (i) at the expense of i3 Mobile
and (ii) in satisfaction of i3 Mobile's obligation under Section 4980B of the
Internal Revenue Code (and any similar state law) with respect to the period of
time such benefits are continued hereunder.

(g)     This Section 7 sets forth the only obligations of i3 Mobile with respect
to the termination of McMenamin's employment with i3 Mobile, and McMenamin
acknowledges that, upon the termination of his employment, he shall not be
entitled to any payments or benefits which are not explicitly provided herein.

8.      COVENANT REGARDING INVENTIONS AND COPYRIGHTS

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McMenamin shall disclose promptly to i3 Mobile any and all inventions,
discoveries, improvements and patentable or copyrightable works initiated,
conceived or made by him, either alone or in conjunction with others, during the
Term and related to the business or activities of i3 Mobile and he assigns all
of his interest therein to i3 Mobile or its nominee; whenever requested to do so
by i3 Mobile, McMenamin shall execute any and all applications, assignments or
other instruments which i3 Mobile shall deem necessary to apply for and obtain
letters patent or copyrights of the United States or any foreign country, or
otherwise protect i3 Mobile's interest therein. These obligations shall continue
beyond the conclusion of the Term with respect to inventions, discoveries,
improvements or copyrightable works initiated, conceived or made by McMenamin
during the Term and shall be binding upon McMenamin's assigns, executors,
administrators and other legal representatives.

9.      PROTECTION OF CONFIDENTIAL INFORMATION

McMenamin acknowledges that he has been and will be provided with information
about, and his employment by i3 Mobile will, throughout the Term, bring him into
close contact with, many confidential affairs of i3 Mobile and its subsidiaries,
including proprietary information about costs, profits, markets, sales,
products, key personnel, pricing policies, operational methods, technical
processes and other business affairs and methods, plans for future developments
and other information not readily available to the public, all of which are
highly confidential and proprietary and all of which were developed by i3 Mobile
at great effort and expense. McMenamin further acknowledges that the services to
be performed by him under this Agreement are of a special, unique, unusual,
extraordinary and intellectual character, that the business of i3 Mobile will be
conducted throughout the world (the "Territory"), that its services will be
marketed throughout the Territory, that i3 Mobile competes and will compete in
all of its business activities with other organizations which are located in any
part of the Territory and that the nature of the relationship of McMenamin with
i3 Mobile is such that McMenamin is capable of competing with i3 Mobile from
nearly any location in the Territory. In recognition of the foregoing, McMenamin
covenants and agrees during the Term and for a period of five (5) years
thereafter:

        (i)     That he will keep secret all confidential matters of i3 Mobile
and not disclose them to anyone outside of i3 Mobile, either during or after the
Term, except with i3 Mobile's prior written consent or, if during the Term, in
the performance of his duties hereunder, McMenamin makes a good faith
determination that it is the best interest of i3 Mobile and to disclose such
matters;

        (ii)    That he will not make use of any such confidential matters for
his own purposes or the benefit of anyone other than i3 Mobile; and

        (iii)   That he will deliver promptly to i3 Mobile on termination of
this Agreement, or at any time i3 Mobile may so request, all confidential
memoranda, notes, records, reports and other confidential documents (and all
copies thereof) relating to the business of i3 Mobile, which he may then possess
or have under his control.

10.     RESTRICTION ON COMPETITION, INTERFERENCE AND SOLICITATION

In recognition of the considerations described in Section 9 hereof, McMenamin
covenants and agrees that, during the Term and for a period of one (1) year or
such longer period of time during which McMenamin is continuing to receive
compensation from i3 Mobile after such termination, McMenamin will not, directly
or indirectly, (A) enter into the employ of, or render any services to, any
person, firm or corporation engaged in any business directly competitive with
the business of i3 Mobile in any part of the Territory in which i3 Mobile is
actively engaged in business on the date of termination; (B)

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engage in any such business for his own account; (C) become interested in any
such business as an individual, partner, shareholder, creditor, director,
officer, principal, agent, employee, trustee, consultant, advisor, franchisee or
in any other relationship or capacity; or (D) interfere with i3 Mobile's
relationship with, or endeavor to employ or entice away from i3 Mobile any
person, firm, corporation, governmental entity or other business organization
who or which is or was an employee, customer or supplier of, or maintained a
business relationship with, i3 Mobile at any time (whether before or after the
Term), or which i3 Mobile has solicited or prepared to solicit; provided,
however, that the provisions of clause (A) shall not be deemed to preclude
McMenamin from engagement by a corporation some of the activities of which are
competitive with the business of i3 Mobile if McMenamin's engagement does not
relate, directly or indirectly, to such competitive business, and nothing
contained in this Section 10 shall be deemed to prohibit McMenamin from
acquiring or holding, solely for investment, publicly traded securities of any
corporation some of the activities of which are competitive with the business of
i3 Mobile so long as such securities do not, in the aggregate, constitute more
than five percent (5%) of any class or series of outstanding securities of such
corporation.

11.     SPECIFIC REMEDIES

For purposes of Sections 8, 9 and 10 of this Agreement, references to i3 Mobile
shall include all current and future majority-owned subsidiaries of i3 Mobile
and all current and future joint ventures in which i3 Mobile may from time to
time be involved. It is understood by McMenamin and i3 Mobile that the covenants
contained in this Section 11 and in Sections 8, 9 and 10 hereof are essential
elements of this Agreement and that, but for the agreement of McMenamin to
comply with such covenants, i3 Mobile would not have agreed to enter into this
Agreement. i3 Mobile and McMenamin have independently consulted with their
respective counsel and have been advised concerning the reasonableness and
propriety of such covenants with specific regard to the nature of the business
conducted by i3 Mobile and all interests of i3 Mobile. McMenamin agrees that the
covenants of Sections 8, 9 or 10 hereof are reasonable and valid. If McMenamin
commits a breach of any of the provisions of Sections 8, 9 or 10 hereof, such
breach shall be deemed to be grounds for termination for Cause. In addition,
McMenamin acknowledges that i3 Mobile may have no adequate remedy at law if he
violates any of the terms hereof. McMenamin therefore understands and agrees
that i3 Mobile shall have (i) the right to have such provisions specifically
enforced by any court having equity jurisdiction, it being acknowledged and
agreed that any such breach will cause irreparable injury to i3 Mobile and that
money damages will not provide an adequate remedy to i3 Mobile, and (ii) the
right to require McMenamin to account for and pay over to i3 Mobile all
compensation, profits, monies, accruals, increments and other benefits
(collectively "Benefits") derived or received by McMenamin as a result of any
transaction constituting a breach of any of the provisions of Sections 8, 9 or
10 and McMenamin hereby agrees to account for and pay over such Benefits to i3
Mobile.

12.     INDEPENDENCE, SEVERABILITY AND NON-EXCLUSIVITY

Each of the rights enumerated in Sections 8, 9 or 10 hereof and the remedies
enumerated in Section 11 hereof shall be independent of the others and shall be
in addition to and not in lieu of any other rights and remedies available to i3
Mobile at law or in equity. If any of the covenants contained in Sections 8, 9
or 10, or any part of any of them, is hereafter construed or adjudicated to be
invalid or unenforceable, the same shall not affect the remainder of the
covenant or covenants or right or remedies which shall be given full effect
without regard to the invalid portions. The parties intend to and do hereby
confer jurisdiction to enforce the covenants contained in Section 8, 9 or 10 and
the remedies enumerated in Section 11 upon the federal and state courts of
Connecticut sitting in Fairfield County. If any of the covenants contained in
Sections 8, 9 or 10 is held to be invalid or unenforceable

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because of the duration of such provision or the area covered thereby, the
parties agree that the court making such determination shall be the power to
reduce the duration and/or area of such provision and in its reduced from said
provision shall then be enforceable. No such holding of invalidity or
unenforceability in one jurisdiction shall bar or in any way affect i3 Mobile's
right to the relief provided in Section 11 or otherwise in the courts of any
other state or jurisdiction within the geographical scope of such covenants as
to breaches of such covenants in such other respective states or jurisdictions,
such covenants being, for this purpose, severable into diverse and independent
covenants.

13.     DISPUTES

If i3 Mobile or McMenamin shall dispute any termination of McMenamin's
employment hereunder or if a dispute concerning any payment hereunder shall
exist:

(a)     either party shall have the right (but not the obligation), in addition
to all other rights and remedies provided by law, to compel binding, enforceable
and non-appealable arbitration of the dispute in the City of New York under the
rules of the American Arbitration Association by giving written notice of
arbitration to the other party within thirty (30) days after notice of such
dispute has been received by the party to whom notice has been given; and

(b)     if such dispute (whether or not submitted to arbitration pursuant to
Section 13(a) hereof) results in a determination that (i) i3 Mobile did not have
the right to terminate McMenamin's employment under the provisions of this
Agreement or (ii) the position taken by McMenamin concerning payments to
McMenamin is correct, i3 Mobile shall promptly pay, or if theretofore paid by
McMenamin, shall promptly reimburse McMenamin for, all costs and expenses
(including reasonable attorneys' fees) reasonably incurred by McMenamin in
connection with such dispute.

14.     SUCCESSORS; BINDING AGREEMENT

In the event of a future disposition by i3 Mobile (whether direct or indirect),
by sale of assets or stock, merger, consolidation or otherwise of all or
substantially all of its business and/or assets in a transaction to which
McMenamin consents, i3 Mobile will require any successor, by agreement in form
and substance satisfactory to McMenamin, to expressly assume and agree to
perform this Agreement in the same manner and to the same extent that i3 Mobile
would be required to perform if no such disposition had taken place. This
Agreement and all rights of McMenamin hereunder shall inure to the benefit of,
and be enforceable by, McMenamin's personal or legal representatives, executors,
administrators, administrators cta, successors, heirs, distributees, devisees
and legatees. If McMenamin should die while any amount would still be payable to
him hereunder if he had continued to live, all such amounts, unless otherwise
provided herein, shall be paid in accordance with the terms of this Agreement to
McMenamin's estate.

15.     NOTICES

All notices, consents and other communications required or permitted to be given
by any party hereunder shall be in writing (including telecopy or other similar
writing) and shall be given be personal delivery, certified or registered mail,
postage prepaid, or telecopy (or other similar writing) as follows:

To i3 Mobile:           181 Harbor Drive
                        Stamford, CT  06902
                        Attn:  President and Chief Executive Officer
                        Telecopy:  (203) 428-3204

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To McMenamin:           9 Colonial Court
                        New Canaan, CT 06840

or at such other address or telecopy number (or other similar number) as either
party may from time to time specify to the other. Any notice, consent or other
communication required or permitted to be given hereunder shall have been deemed
to be given on the date of mailing, personal delivery or telecopy or other
similar means (provided the appropriate answer back is received) thereof and
shall be conclusively presumed to have been received on the second business day
following the date of mailing or, in the case of personal delivery or telecopy
or other similar means, the day of delivery thereof, except that a change of
address shall not be effective until actually received.

16.     MODIFICATIONS AND WAIVERS

No term, provision or condition of this Agreement may be modified or discharged
unless such modification or discharge is authorized by the President and Chief
Executive Officer or Board of Directors of i3 Mobile and is agreed to in writing
and signed by McMenamin. No waiver by either party hereto of any breach by the
other party hereto of any term, provision or condition of this Agreement to be
performed by such other party shall be deemed a waiver of similar or dissimilar
provisions or conditions at the same or at any prior or subsequent time.

17.     ENTIRE AGREEMENT

This Agreement constitutes the entire understanding between the parties hereto
relating to the subject matter hereof, superseding all negotiations, prior
discussions, preliminary agreements and agreements relating to the subject
matter hereof made prior to the date hereof.

18.     LAW GOVERNING

Except as otherwise explicitly noted, this Agreement shall be governed by and
construed in accordance with the laws of the State of Connecticut (without
giving effect to the principles of conflicts of law).

19.     INVALIDITY

Except as otherwise specified herein, the invalidity or unenforceability of any
term or terms of this Agreement shall not invalidate, make unenforceable or
otherwise affect any other term of this Agreement which shall remain in full
force and effect.

20.     HEADINGS

The headings contained in this Agreement are for reference purposes only and
shall not affect the meaning or interpretation of this Agreement.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement on the day
and year set forth above.

                                I3 MOBILE, INC.

<PAGE>   10

                                By:  /s/ John A. Lack
                                    ---------------------------------------
                                    John A. Lack
                                    President and Chief Executive Officer

                                     /s/ John McMenamin
                                    ---------------------------------------
                                    John McMenamin<PAGE>   1

                                                                EXHIBIT 10.10(b)

                              AGREEMENT OF SUBLEASE

                                     between

                                 i3 Mobile, Inc.
                                   Sublandlord

                                       and

                             O'DONNELL & ASSOCIATES,
                                    Subtenant

                                    Premises:

                              Portion of Suite 501
                                 One Dock Street
                              Stamford, Connecticut

<PAGE>   2

        AGREEMENT OF SUBLEASE (this "Sublease"), made as of the 1st day of
August, 2000, between i3 MOBILE, INC., a Delaware corporation, having an office
address at 181 Harbor Drive, Stamford, CT 06902 ("Sublandlord"), and O'DONNELL &
ASSOCIATES, a Connecticut partnership, having an office address at 832 Bedford
Street, Stamford, Connecticut 06901 ("Subtenant").

                                    RECITALS:

        A.      Seaboard Property Management, Inc, a Delaware Corporation, as
landlord ("Overlandlord") and Sublandlord (formerly known as Intelligent
Information Incorporated), as tenant, entered into a Lease Agreement, dated as
of April 27, 1995 (the "Master Lease"), pursuant to which Sublandlord leased
from Overlandlord 3,217 square feet of space located on the fifth floor of the
building known by the street address One Dock Street, Stamford, Connecticut (the
"Building").

        B.      Overlandlord and Sublandlord have entered into a Lease
Modification Agreement effective as of April 15, 1997 (the Master Lease together
with said Lease Modification Agreement are hereinafter collectively referred to
as the "Overlease") where Sublandlord leased 1,830 square feet of additional
space on the fifth floor of the Building (together with the space taken per the
terms of the Master Lease referred to as the "Overlease Premises").

        C.      Sublandlord desires to sublease to Subtenant, and Subtenant
desires to sublease from Sublandlord, a portion of the Overlease Premises on the
terms and conditions contained herein.

                                   WITNESSETH:

        NOW, THEREFORE, in consideration of the mutual covenants herein
contained, it is mutually agreed as follows:

        1.      Subleasing of Premises.

        1.1.    Sublandlord hereby subleases to Subtenant, and Subtenant hereby
hires from Sublandlord, the Premises, as hereinafter defined, consisting of a
portion of the Overlease Premises, as shown on "Exhibit A" annexed hereto and
made a part hereof.

        1.2.    For all purposes of this Sublease, the parties agree that the
Overlease Premises includes 5,047 square feet of rentable area, regardless of
actual measurements or anything else to the contrary.

        1.3.    The "Premises" for purposes of this Sublease means that portion
of the Overlease Premises as shown on Exhibit A and agreed by the parties to
consist of 3,217 rentable square feet.

        1.4.    As used herein the term "Subtenant's Proportionate Share" refers
to a fraction the numerator of which is the number of square feet of rentable
area included in the Premises and the denominator of which is the number of
square feet of rentable area included in the Overlease Premises.

        2.      Term.

        2.1.    The term of this Sublease for the Premises commences on the date
(the "Commencement Date") which is the first calendar date of the month
following the later of (i) the date on which the

<PAGE>   3

Overlandlord consents to the Sublease, and (ii) the date on which Subtenant and
Sublandlord have both executed and delivered this Sublease. The term of this
Sublease ends for the Premises on March 30, 2002 (the "Expiration Date") or on
such earlier date upon which such term expires or is terminated pursuant to any
of the conditions or covenants of this Sublease or pursuant to law.

        2.2.    Subtenant, on the date on which the term of this Sublease
expires or is terminated, is required to vacate and surrender possession of all
portions of the Premises in the same condition as taken reasonable wear and tear
excepted. The provisions of this Section 2.2 survive the expiration of the term,
and any termination, of this Sublease.

        3.      Rents.

        3.1.    Subtenant is required to pay to Sublandlord fixed rent (the
"Fixed Rent") as follows:

                (a)     for the Premises, commencing on the Commencement Date
and ending on March 31 2001, monthly installments of $4,172.19; and

                (b)     for the Premises, commencing on April 1, 2001 and ending
on the Expiration Date, payable in monthly installments of $4,441.36.

Each monthly installment of Fixed Rent is payable on the first day of each
calendar month during the term of this Sublease, except that $4,172.19,
constituting, and to be applied in payment of, the first monthly installment of
Fixed Rent for the Premises, is payable at the time of execution and delivery of
this Sublease by Subtenant.

        3.2.    In addition to the Fixed Rent, commencing on the Commencement
Date and continuing for the entire term of this Sublease, Subtenant is required
to reimburse Sublandlord for all Additional Rent, as defined in the Overlease,
payable by Sublandlord with respect to Subtenant's Proportionate Share of all
Additional Rent, as defined in the Overlease, payable by Sublandlord under the
Overlease. Subtenant's payments to Sublandlord under this Section 3.2 are due on
the dates on which Sublandlord's payments under the Overlease are due to
Overlandlord. If Sublandlord receives any refund (or credit) from Overlandlord
in respect of any amount paid by Subtenant under this Section 3.2, Sublandlord
is required to provide Subtenant with a corresponding refund (or credit), less
any costs and expenses incurred by Sublandlord in connection with obtaining the
same.

        3.3.    In addition to the foregoing, Subtenant is required to bear and,
on demand, pay (or reimburse Sublandlord for) all other costs and expenses
(including all amounts payable under the Overlease) relating to the Premises or
the use and occupancy of any thereof, or any act or omission therein or with
respect thereto, or any utility or service furnished thereto. All of the
foregoing constitutes additional rent. Without limiting the generality of the
foregoing, Subtenant must pay for any supplemental, overtime or above building
standard HVAC, maintenance, repair, electric or other service for which a
separate charge is made by Overlandlord or any third party including the Initial
Electrical Charge under the Overlease (which equates to an additional minimum
monthly payment of $455.71 per month).

        3.4.    As used herein the term "additional rent" refers to all sums of
money which are payable by Subtenant to Sublandlord or Overlandlord or otherwise
hereunder, other than Fixed Rent, and the term "rents" refers to Fixed Rent and
additional rent. All rents are payable in lawful money of the United States at
such place and to such person as Sublandlord from time to time designates.

<PAGE>   4

        3.5.    Subtenant must pay promptly all rents as and when the same
become due without set-off, offset or deduction of any kind whatsoever except as
otherwise provided for herein and, in the event of Subtenant's failure to pay
any additional rent when due, Sublandlord will have all of the rights and
remedies provided for herein or at law or in equity in the case of non-payment
of Fixed Rent.

        3.6.    Sublandlord's failure during the term of this Sublease to
prepare and deliver any statement or bill required or permitted to be delivered
to Subtenant hereunder, or Sublandlord's failure to make a demand under this
Sublease, is not in any way a waiver of, and will not cause Sublandlord to
forfeit or surrender, its rights to collect any rents which may have become due
from Subtenant pursuant to this Sublease. Subtenant's liability for rents
accruing during the term of this Sublease survives the expiration or sooner
termination of this Sublease.

        3.7.    During the term of this Sublease, Subtenant shall provide
Sublandlord with unrestricted access to a portion of the Premises formerly used
by Sublandlord as its operations center together with reasonable ingress and
egress thereto, as shown on "Exhibit A" annexed hereto and made a part hereof
("Ops Center Access"). In consideration for this right of unrestricted Ops
Center Access, Sublandlord agrees to pay Subtenant a monthly fee of $388.42
through March 31, 2001 and $411.01 commencing on April 1, 2001 through the end
of the term.

        4.      Condition of the Premises.

        4.1.    Subtenant represents that it has examined (or waived examination
of) the Premises. Sublandlord has not made and does not make any representations
or warranties as to the physical condition of the Premises (including any latent
defects in or to the Premises), the uses to which the Premises may be put, or
any other matter or thing affecting or relating to the Premises, except as
specifically set forth in this Sublease. Subtenant agrees to accept the Premises
in their "as is" condition as of the date hereof as the same may be affected by
reasonable wear and tear after the date hereof, and, Sublandlord has no
obligation whatsoever to alter, improve, decorate or otherwise prepare the
Premises for Subtenant's occupancy or use.

        5.      Subordination to and Incorporation of the Lease.

        5.1.    This Sublease is subordinate to the Overlease, and to all
leases, and mortgages and other rights or encumbrances to which the Overlease is
subordinate. This provision is self-operative, but Subtenant, within ten (10)
days of Sublandlord's request, must execute any instrument reasonably requested
by Sublandlord or Overlandlord to evidence or confirm the same. Sublandlord will
request that Overlandlord enter into a non-disturbance, recognition and
attornment agreement in a form reasonably acceptable to Subtenant and
Overlandlord and otherwise as provided in the Overlease, and will request that
Overlandlord obtain a similar agreement from any lessor or mortgagee of
Overlandlord, but neither Sublandlord nor Overlandlord (a) is obligated to make
any payment or incur any liability to obtain any such agreement, unless
Subtenant pays in advance to Sublandlord or Overlandlord, as the case may be, an
amount that is no less than such payment or liability, or (b) is obligated to
commence any litigation or otherwise undertake unusual or inordinate measures to
obtain any such agreement. Subtenant must reimburse all reasonable costs,
including reasonable attorneys' fees, incurred by Sublandlord or Overlandlord in
preparing or obtaining the documentation required by this Section, except to the
extent that any lessor or mortgagee is an affiliate of Overlandlord.

        5.2.    Sublandlord represents that a true and complete copy of the
Overlease (with certain information redacted therefrom) is annexed hereto as
"Exhibit B". If Sublandlord complies with its obligations under this Sublease
and if the Overlease nevertheless terminates for any reason, then this Sublease
will also terminate, without any liability of Sublandlord to Subtenant on
account thereof.

<PAGE>   5

        5.3.    Sublandlord will not, as long as Subtenant is not in default
under this Sublease:

                (a)     do or approve anything that would cause the Overlease to
be canceled, terminated or forfeited, unless Overlandlord has agreed in the case
of any such cancellation, termination or forfeiture to provide non-disturbance
protection in favor of Subtenant on terms no less favorable to Subtenant than
the terms provided for in the Overlease; provided, however, that nothing in this
Section 5.3 will prevent Sublandlord from exercising any option to cancel or
terminate the Overlease pursuant thereto;

                (b)     enter into any amendment to the Overlease which prevents
or adversely affects the use of the Premises by Subtenant in accordance with the
terms of this Sublease or increases the obligations of Subtenant or decreases
Subtenant's rights under this Sublease; or

                (c)     permit a default under the Overlease to continue after
notice and an opportunity to cure so as to entitle the Overlandlord under the
Overlease to withhold any approval or consent which Subtenant has requested
pursuant to this Sublease.

        5.4.    Except as otherwise expressly provided in, or otherwise
inconsistent with, this Sublease, and except to the extent not applicable to the
Premises, all of the provisions of the Overlease (the "Incorporated Provisions")
are hereby incorporated in this Sublease by reference with the same force and
effect as if set forth at length herein and provided further that unless the
context requires otherwise:

                (a)     references in such provisions to Landlord are deemed to
refer to Sublandlord,

                (b)     references in such provisions to Tenant are deemed to
refer to Subtenant,

                (c)     references in such provisions to the Premises or the
Leased Premises are deemed to refer to the Premises hereunder,

                (d)     references in such provisions to fixed rent are deemed
to refer to the Fixed Rent hereunder,

                (e)     references in such provisions to other Incorporated
Provisions are deemed to refer to such Incorporated Provisions as incorporated
herein,

                (f)     references in such provisions to the Overlease are
deemed to refer to this Sublease, references in such provisions to superior
leases are deemed to refer to leases to which the Overlease is subordinate and
references in such provisions to mortgages or superior mortgages are deemed to
refer to mortgages to which the Overlease is subordinate,

                (g)     references in such provisions to subleases, sublettings
or subtenants are deemed to refer to undersubleases, undersublettings or
undersubtenants,

                (h)     whenever, pursuant to any of the Incorporated Provisions
as incorporated herein, Subtenant is required to furnish insurance,
indemnification or other similar protection to or for Sublandlord, or to take
some act as designated or directed by Sublandlord or to the satisfaction of
Sublandlord, Subtenant is required to furnish the same to or for Overlandlord
and Sublandlord, or to take the same as designated or directed by Overlandlord
or Sublandlord or to the satisfaction of Overlandlord and Sublandlord,

<PAGE>   6

                (i)     whenever, pursuant to any of the Incorporated Provisions
as incorporated herein, Subtenant is required to obtain the consent or approval
of Sublandlord to or with respect to any act, omission or thing (e.g. to any
undersublease or assignment or to the making of any alterations, installations,
additions or improvements), Subtenant is required to obtain the consent or
approval of Overlandlord and Sublandlord to or with respect to such act,
omission or thing,

                (j)     whenever, pursuant to any of the Incorporated Provisions
as incorporated herein, Subtenant grants any release, waiver or similar thing to
Sublandlord, Subtenant is deemed to have granted the same to Overlandlord and
Sublandlord,

                (k)     whenever, pursuant to any of the Incorporated Provisions
as incorporated herein, Subtenant grants Sublandlord any right of entry, access
or use of the Premises, Subtenant is deemed to have granted such right to
Overlandlord and Sublandlord,

                (l)     any time period provided for in the Incorporated
Provisions is shortened or lengthened, as the case may be, as necessary so that
actions or omissions relating thereto may be coordinated with the corresponding
actions or omissions under the Overlease or performed within the time required
by the Overlease,

                (m)     if the Overlease provides that any Incorporated
Provisions survive the expiration or any termination of the Overlease, then such
Incorporated Provisions survive the expiration of the term, and any termination,
of this Sublease, and

                (n)     without limiting the generality of any of the foregoing
provisions of this Section 5.4, (A) Minimum Required Casualty Insurance Coverage
shall be deemed $1,000,000 (B) Exhibit 2 shall be deleted and (C) Exhibit 6
shall be deleted.

        5.5.    Notwithstanding anything to the contrary contained in this
Sublease (including any of the Incorporated Provisions as herein incorporated),
Sublandlord is not obligated:

                (a)     to provide any of the services that Overlandlord has
agreed in the Overlease to provide or is required by law to provide, or

                (b)     to make any of the repairs or restorations that
Overlandlord has agreed in the Overlease to make or is required by law to make,
or

                (c)     to comply with any laws or requirements of public
authorities with which Overlandlord has agreed in the Overlease to comply, or

                (d)     to take or to refrain from taking any other action that
Overlandlord has agreed in the Overlease to take or to refrain from taking or is
required by law to take or to refrain from taking (including, in either case,
any obligations with respect to giving consents, approvals, etc.), or

                (e)     to perform any obligation that Overlandlord has agreed
in the Overlease to perform,

and Sublandlord has no liability to Subtenant on account of any failure of
Overlandlord (or Sublandlord) to provide, make, comply with, take, refrain from
taking, or perform any of the foregoing. With respect to Overlandlord's
performance of obligations and exercise of rights and powers in accordance with
the Overlease, to which reference is made in this Section:

<PAGE>   7

                        (i)     upon Subtenant's request and at Subtenant's
                expense, Sublandlord must make continuing, good faith and
                commercially reasonable efforts, without being obligated to
                commence any arbitration or litigation against Overlandlord, to
                (y) cause Overlandlord to perform, provide, make, comply with,
                take, and exercise the same, and (z) recover compensation on
                account of Overlandlord's failure to do so; provided, that prior
                to Sublandlord commencing or continuing any such efforts at
                Subtenant's specific request, Sublandlord may require that
                Subtenant specifically agree to reimburse or that Subtenant
                prepay Sublandlord's expenses by reason of such efforts, and

                        (ii)    if any right or remedy of Sublandlord against
                Overlandlord or any duty or obligation of Overlandlord in either
                case under any of the Incorporated Provisions is subject to or
                conditioned upon Sublandlord's making any demand upon
                Overlandlord or giving any notice, request or statement to
                Overlandlord or taking any other similar action then, if
                Subtenant so requests, Sublandlord, at Subtenant's expense (such
                expense to be prepaid by Subtenant prior to Sublandlord
                commencing or continuing to act under this clause (ii)), must
                make such demand or request, give such notice or statement or
                take such other action.

Subtenant is required to defend, indemnify and hold harmless Sublandlord from
and against any and all loss, cost, damage and expense incurred by Sublandlord,
including reasonable attorney fees, under or in connection with (1) any such
efforts, pursuant to clause (i) above, or (2) any such demand, notice, request,
statement or similar action, pursuant to clause (ii) above. The provisions of
the preceding sentence and of Section 5.8 survive the expiration of the term,
and any termination, of this Sublease. Prior to taking or continuing to take any
action at Subtenant's request under this Section 5.5, Sublandlord, from time to
time, may require Subtenant to increase the amount of the security deposit under
Section 8 by such amount as Sublandlord reasonably determines in order to secure
the faithful performance by Subtenant of its obligations under this Section 5.5.

        5.6.    Whenever Subtenant desires to do any act or thing which requires
the consent or approval of Sublandlord under any of the Incorporated Provisions
as incorporated herein:

                (a)     Subtenant must not do such act or thing without first
having obtained the consent or approval of Overlandlord and Sublandlord;

                (b)     Sublandlord is permitted to exercise its right to
withhold consent or approval independently of Overlandlord's exercise of its
right; provided, however, that if, in any instance, Overlandlord (i) is required
by the Overlease not to unreasonably withhold consent or approval, and (ii) has
granted such consent or approval, then Sublandlord may not unreasonably withhold
such consent or approval; and

                (c)     without limiting Sublandlord's right to withhold consent
or approval in any instance and notwithstanding any Incorporated Provision or
provision of law requiring Sublandlord to act reasonably, Sublandlord is
entitled, without liability to Subtenant on account thereof, to withhold consent
or approval whenever and for so long as Overlandlord withholds its consent or
approval, regardless of whether or not Overlandlord is entitled to withhold such
consent or approval and regardless of whether Overlandlord may have liability to
Sublandlord or Subtenant on account thereof; and

                (d)     Subtenant may not request Overlandlord's consent or
approval directly and neither Sublandlord's forwarding Subtenant's request to
Overlandlord nor Sublandlord's other efforts to obtain Overlandlord's consent or
approval constitutes Sublandlord's consent or approval, and the same will not
prejudice Sublandlord's right to withhold consent or approval.

<PAGE>   8

        5.7.    Notwithstanding any other provision of this Sublease, Subtenant
must perform all of its obligations hereunder at such times, by such dates or
within such periods, and otherwise as required to avoid any default under the
Overlease or any breach or violation under the Overlease with respect to the
Premises. The obligation of Sublandlord to perform in accordance with any and
all of the provisions of this Section 5 is conditioned on Subtenant not being in
default under this Sublease.

        5.8.    Subtenant is required to indemnify Sublandlord from any loss,
cost, damage or expense (including reasonable attorneys fees) arising out of any
failure by Subtenant to perform any of its obligations under this Sublease,
including any loss, cost, damage or expense which may result from any default
under or termination of the Overlease arising by reason of any such failure.

        5.9.    Subtenant understands and agrees that Sublandlord will continue
to occupy the portion of the Overlease Premises not demised to Subtenant
hereunder. As such, Subtenant grants Sublandlord, throughout the Term of this
Sublease and at no cost to Sublandlord (i) unrestricted access for its
employees, agents, guests and representatives through the entry points to the
Overlease Premises and (ii) requires reasonable access to the main telephone and
computer system control panels that are housed within the Premises.

        6.      Covenant of Quiet Enjoyment. Upon Subtenant paying any and all
rents (including additional rent) and observing and performing all the terms,
covenants and conditions on Subtenant's part to be observed and performed
hereunder, Subtenant may peaceably and quietly enjoy the Premises, subject
nevertheless to the terms and conditions of this Sublease, including but not
limited to Section 5.1 and the Incorporated Provisions, and to the Overlease and
the other leases, mortgages and other rights and encumbrances referred to in the
Overlease.

        7.      Alterations.

        7.1.    The restrictions on, and other terms and conditions applicable
to, the making of any alterations, additions, installations, substitutions,
improvements or decorations in or about the Premises by or at the request of
Subtenant (referred to herein as "Subtenant's Alterations") as provided in the
Overlease are incorporated herein by reference, and the consent or approval of
Overlandlord and Sublandlord is required for any Subtenant's Alterations.

        7.2.    Subtenant must not commence or prosecute any alteration,
installation, addition or improvement in or to the Premises, unless, in addition
to having complied with all other provisions of this Sublease and the
Incorporated Provisions as incorporated herein, Subtenant has furnished to
Sublandlord (a) a fixed price general contract covering the same, and (b)
payment and performance bonds in favor of Sublandlord guaranteeing lien free
completion of the work in form, amount and issued by a surety satisfactory to
Sublandlord in its reasonable judgement. Additionally, if Overlandlord has the
right under the Overlease to require that any Subtenant's Alterations be removed
at the end of the term of the Overlease, then Subtenant, prior to commencing the
same, must increase the amount of the security deposit by such amount as
Sublandlord reasonably determines in order to secure the faithful performance by
Subtenant of its obligations to remove such Subtenant's Alterations.

        Security Deposit

        8.1     At the same time as or before Subtenant executes and delivers
this Sublease, Subtenant is required to deliver to Sublandlord, in cash, or by a
cashier's check or Subtenant's certified check, in either case drawn by or on a
bank that is a member of the New York Clearing House Association, and payable to
the order of Sublandlord, an amount no less than the Required Security Amount,
as hereinafter defined, as security for the faithful performance and observance
by Subtenant of the terms, covenants and conditions of this Sublease on
Subtenant's part to be observed and performed. If Subtenant defaults in the
observance or performance of any term, covenant or condition of this Sublease

<PAGE>   9

on Subtenant's part to be observed or performed, including payment of Fixed Rent
and additional rent, beyond any applicable notice and cure period provided under
this Sublease, Sublandlord may use, apply or retain the whole or any part of any
Cash Security to the extent required for the payment of any rents with respect
to which Subtenant is in default, or for the payment of any sum that Sublandlord
may expend or incur because of Subtenant's default, including the payment of any
damages or deficiency in the reletting of the Premises, without thereby waiving
any other right or remedy of Sublandlord with respect to such default, and
Sublandlord shall hold the remainder of any Cash Security as security for the
faithful performance and observance by Subtenant of the terms, covenants and
conditions of this Sublease on Subtenant's part to be observed and performed
with the same rights as set forth above to use, apply or retain all or any part
of such remainder of such Cash Security. If Sublandlord uses, applies or retains
the whole or any part of any Cash Security under the foregoing provisions of
this Section 8.1, Subtenant, promptly after notice thereof, shall pay to
Sublandlord in cash, or by a cashier's check or Subtenant's certified check, in
either case drawn by or on a bank that is a member of the New York Clearing
House Association, and payable to the order of Sublandlord, the sum necessary to
restore the Cash Security to an amount equal to the Required Security Amount. A
failure by Subtenant to so restore the Cash Security to an amount equal to the
Required Security Amount will constitute a material default by Subtenant under
the terms, covenants and conditions of this Sublease.

        8.2     As of the date on which Subtenant first delivers Cash Security
to Sublandlord as described in Section 8.1 and until there is a reduction in the
Required Security Amount in accordance with this Section 8.2, the Required
Security Amount is $ 4,441.36 and continuing thereafter for the remainder of the
Term, and for an additional period of ninety (90) days after the Expiration
Date.

        8.      Notices. Any notice, statement, demand, consent, approval,
advice or other communication required or permitted to be given, rendered or
made by either party to the other, pursuant to this Sublease or pursuant to any
applicable law or requirement of public authority concerning the Premises
(collectively, "Notice") must be in writing and will have been properly given,
rendered or made for purposes of this Sublease only if sent by personal
delivery, receipted by the party to whom addressed, or by a recognized overnight
courier, with receipt requested, or by pre-paid registered or certified mail,
return receipt requested, posted in a United States post office station or
depositary in the continental United States, and deemed given on the date
received, addressed:

                        (a)     to Subtenant (i) prior to the Commencement Date,
                at the address shown in the preamble to this Sublease,
                Attention: President, or (ii) on or after the Commencement Date,
                at the Premises, Attention: President,

                        (b)     to Sublandlord, at its address first above
                written, Attention: General Counsel.

Either party may, by Notice actually received by the other party, designate (y)
a different address in the United States for Notices intended for it, and (z)
require the other party to provide a copy of any Notices to any other person at
any other address in the United States.

        9.      Parking.  Subtenant is allocated on a non-exclusive, unreserved
basis, without payment of any additional rent or charge, seven (7) parking
spaces are included in the Premises. Subtenant's use of such parking spaces is
in all other respects subject to the terms, provisions and conditions of the
Overlease.

<PAGE>   10

        10.     Signage. Subtenant may, at Subtenant's cost and expense and with
the prior written approval of Sublandlord and Overlandlord, install a listing
with Subtenant's name on the building directory in the lobby of the Building.

        11.     Miscellaneous.

        11.1.   The obligations of Sublandlord hereunder accruing at any time
are binding only upon the owner, at that time, of the leasehold estate under the
Overlease, and each purchaser or transferee of such leasehold estate is deemed
to have assumed the obligations of Sublandlord hereunder accruing during the
period of its ownership.

        11.2.   Sublandlord has no liability to Subtenant on account of any
failure or refusal by Overlandlord to grant any approval or consent. Sublandlord
has no liability to Subtenant on account of any failure or refusal by
Sublandlord to grant any approval or consent. In any instance in which
Sublandlord is required by any provision of this Sublease (including any of the
Incorporated Provisions as incorporated herein) or applicable law to not
unreasonably withhold consent or approval, Subtenant's sole remedy is an action
for specific performance or injunction requiring Sublandlord to grant such
consent or approval, all other remedies which would otherwise be available being
hereby waived by Subtenant. In any such action, the prevailing party is entitled
to reimbursement of its legal fees from the other party. The provisions of this
Section 12.2 survive the expiration of the term, and any termination, of this
Sublease.

        11.3.   Subtenant represents and warrants to Sublandlord that Subtenant
has not dealt with any broker, agent or finder in connection with this Sublease
and Subtenant hereby agrees to indemnify Sublandlord against any claim for
commission or other compensation in connection with this Sublease made against
Sublandlord by any broker, agent or finder with whom Subtenant has dealt
including attorneys fees incurred by Sublandlord in the defense of any such
claim. The provisions of this Section 12.3 shall survive the expiration of the
term, and any termination, of this Sublease.

        11.4.   This Sublease contains the entire agreement between the parties
and all prior negotiations and agreements are merged in this Sublease. Any
agreement hereafter made is ineffective to change, modify or discharge this
Sublease in whole or in part unless such agreement is in writing and signed by
the parties hereto. No provision of this Sublease is deemed to have been waived
by Sublandlord or Subtenant unless such waiver be in writing and signed by
Sublandlord or Subtenant, as the case may be. The covenants and agreement
contained in this Sublease bind and inure to the benefit of Sublandlord and
Subtenant and their respective permitted successors and assigns.

        11.5.   If any provision of this Sublease is held to be invalid or
unenforceable in any respect, it is intended that the validity, legality and
enforceability of the remaining provisions of this Sublease will not be affected
thereby.

        11.6.   The headings or captions in this Sublease are included only as a
matter of convenience and for reference, and in no way define, limit or describe
the scope of this Sublease nor the intent of any provisions thereof. Capitalized
terms used herein have the same meanings as are ascribed to them in the
Overlease, unless otherwise expressly defined herein. Unless otherwise stated,
all references in this Sublease to Sections are understood to refer to Sections
of this Sublease. The words "include" and "including", as used in this Sublease,
mean, in each case, "without limitation".

        11.7.   The parties acknowledge and agree (a) that each has substantial
business experience and is fully acquainted with the provisions of this
Sublease, (b) that the provisions and language of this

<PAGE>   11

Sublease have been fully negotiated, and (c) that no provision of this Sublease
shall be construed in favor of any party or against any party by reason of such
provision or this Sublease having been drafted on behalf of one party rather
than the other.

        11.8.   The submission of this document by Sublandlord to Subtenant does
not constitute an offer by Sublandlord, and Sublandlord is not bound in any way
unless and until this Sublease is executed and delivered by both parties.

        12.     This Sublease is subject to Overlandlord's consent. Sublandlord
must request the same, but is not obligated to make any payment or incur any
obligation to obtain the same. Sublandlord and Subtenant agree to join in the
execution of the instrument of consent provided for in the Overlease.

        IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
of Sublease as of the day and year first above written.

                                          SUBLANDLORD:

                                          i3 MOBILE, INC.

                                          By:   /s/ Stephen G. Maloney
                                             -----------------------------------
                                              Name:  Stephen G. Maloney
                                              Title: President and CEO

                                          SUBTENANT:

                                          O'DONNELL & ASSOCIATES

                                          By:  /s/ Keri O'Donnell
                                             -----------------------------------
                                              Name: Keri O'Donnell
                                              Title: President

<PAGE>   12

                                    Exhibit A
                           FLOOR PLAN OF THE PREMISES

<PAGE>   13

                                    Exhibit B
                                COPY OF OVERLEASE

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