Document:

<PAGE>
                                                                   EXHIBIT 10.21

                                    AGREEMENT

         THIS AGREEMENT ("Agreement") is made and entered into as of this 13th
day of December, 1993, by and between Namaqua Limited Partnership ("Namaqua")
and Radio Metrix, Inc. ("Radio Metrix").

                                  W I T N E S S E T H:

         WHEREAS, Radio Metrix has developed a unique, patent-pending technology
embodied in a sensing device for parking barrier booms (the "Parking Barrier
Boom Sensor") and which is anticipated in the future to be embodied in a swing
or sliding gate sensor ("Gate Sensor"); and

         WHEREAS, Namaqua has agreed pursuant to the terms of this Agreement to
provide inventory financing for Radio Metrix; and

         WHEREAS, the parties wish to enter into this Agreement setting forth
the terms and conditions of their mutual understanding.

         NOW, THEREFORE, for good and valuable consideration, in hand received,
the parties mutually agree as follows:

         1.       Financing. Namaqua agrees to loan up to $130,000 (the
"Maximum Outstanding Balance") to Radio Metrix for inventory (raw and finished)
for Parking Barrier Boom Sensors during the term of this Agreement. Loans from
Namaqua advanced hereunder shall be in the actual amount of the inventory
purchased by Radio Metrix for Parking Barrier Boom and Gate Sensors. The maximum
amount of financing will be expanded to $200,000 upon the marketing by Radio
Metrix of the Gate Sensor.

         2.       Disbursements of Financing. Advances will be paid by Namaqua
by directly paying invoices for inventory (raw and finished) at the direction of
Radio Metrix.

         3.       Repayment of Advances. Advances will be repaid by Radio Metrix
as it receives payment for sold Parking Barrier Boom Sensors and Gate Sensors
(together referred to herein as "Units"). Out of each Unit sold, the first
$60.00 (which includes $4.50 compensation and $55.50 repayment of outstanding
balance) received by Radio Metrix per Unit will be paid to Namaqua to reduce
the outstanding balance until the entire outstanding balance under this
Agreement has been repaid in full. Any balance remaining outstanding after
<PAGE>
75 days from the date of shipment by Radio Metrix of the related Unit will be
immediately paid in full.

         4.       Collateral. All accounts receivable and inventory of Radio
Metrix will be pledged to support and collateralize the Namaqua financing.
Additionally, all collections by Radio Metrix accounts receivable will be
deposited in a segregated account. Additionally, the obligation of Radio Metrix
to Namaqua will be personally guaranteed by Samuel S. Duffey and Stephen A.
Michael.

         5.       Reports. Radio Metrix will provide Namaqua with monthly
reports of Units sold, accounts receivable, bank statements and amounts paid to
Namaqua.

         6.       Compensation. In addition to the above and when the financing
arrangement ends, Namaqua shall be paid an amount equal to $2.00 on each of
every Parking Barrier Boom Sensor sold (and $2.00 for every Gate Sensor device
if Gate Sensors are financed hereunder). This compensation arrangement will
continue for so long as Radio Metrix markets Parking Barrier Boom Sensors (and
Gate sensors, if financed originally).

         7.       Other Products. This Agreement does not relate to products of
Radio Metrix other than the Parking Barrier Boom Sensor and the Gate Sensor. It
is anticipated that Radio Metrix may introduce other products which may include
but not be limited to garage doer sensors, in-home sensors, motorcycle or
bicycle sensors or other sensors which are not governed by this Agreement and
for which no financing is required to be provided by Namaqua and no compensation
is required to be paid by Radio Metrix.

         8.       Termination. Either party may terminate any additional
financing upon 60 days' written notice.

         9.       Miscellaneous. This Agreement constitutes the entire
understanding of the parties and shall not be amended or otherwise altered
except in writing by the parties hereto. This Agreement shall be governed by and
construed in accordance with the laws of the State of Florida. Any dispute
arising under this Agreement shall be resolved exclusively by binding
arbitration before the American Arbitration Association seated in Sarasota,
Florida. The findings of the arbitrators shall be final and binding. This
Agreement shall be binding upon and shall inure to the benefit of the heirs,
assigns, successors and interests.

                                        2
<PAGE>
         IN WITNESS WHEREOF, the parties set their hands and seals on the day
and year first above written.

                                          RADIO METRIX, INC.

                                          By: /s/ Stephen A. Michael
                                             ----------------------------------
                                          Print: Stephen A. Michael
                                                -------------------------------

                                          Title: President
                                                -------------------------------

                                          NAMAQUA LIMITED PARTNERSHIP

                                          By: /s/ Thomas W. Rogers
                                             ----------------------------------
                                          Print: Thomas W. Rogers
                                                -------------------------------

                                          Title: General Partner
                                                -------------------------------

         All payments due Namaqua Limited Partnership pursuant to this Agreement
are jointly and severally guarantee by Samuel S. Duffey and Stephen A. Michael:

                                          /s/ Samuel S. Duffey
                                          -------------------------------------
                                          Samuel S. Duffey, Individually

                                          /s/ Stephen A. Michael
                                          -------------------------------------
                                          Stephen A. Michael, Individually

                                       3
<PAGE>

----------------------
   Contract Number

                               SECURITY AGREEMENT
                                   (General)

                        RADIO METRIX, INC.                          (and if more
--------------------------------------------------------------------
                       (Name(s) of Debtor(s))

than one, each of them jointly and severally), hereinafter called "Debtor", of
1515 Ringling Blvd., Ste. 800;             Sarasota
-------------------------------------------------------------
       (No. and Street)                     (City)

     Sarasota        Florida      , for value received, hereby grants to
----------------------------------
     (County)        (State)

NAMAQUA LIMITED PARTNERSHIP   Rock Island     hereinafter called "Secured Party"
---------------------------------------------
of 1001 - 25th Avenue Court;        Moline,                    Illinois        .
   ----------------------------------------------------------------------------
      (No. and Street)              (City)        (County)      (State)

a security interest in the following property:
                                              ----------------------------------
          All accounts receivable and inventory of Radio Metrix, Inc.
--------------------------------------------------------------------------------

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

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

together with all accessories, parts, equipment, and accessions now attached
to or used in connection therewith or which may hereafter at any time be
installed in or affixed to the above-described property, and also any and all
replacements of any such property and other property of the same class or
classes hereinafter owned or acquired, except consumer goods, other than
accessions, acquired more than 10 days after the day of the transaction (all of
which is hereinafter called "Collateral"), to secure the payment of that
certain indebtedness evidenced by a promissory note or notes executed by Debtor
in the amount of Two Hundred Thousand and no/100 -------- Dollars ($200,000.00),
                 ----------------------------------------         -------------
of even date herewith, and any and all extensions or renewals thereof, and any
and all other liabilities or obligations of the Debtor to the Secured Party,
direct or indirect, absolute or contingent, now existing or hereafter arising,
now due or hereafter to become due (all hereinafter called the "Obligations").

         As further security, Debtor grants to Secured Party a security
interest in all property of Debtor which is or may hereafter be in Secured
Party's possession in any capacity including all monies owned or to be owned by
Secured Party to Debtor; and with respect to all of such property, Secured Party
shall have the same rights as it has with respect to the Collateral.

         Debtor hereby warrants and agrees that:

         1.       The Collateral is acquired or used primarily for: [  ]
personal, family, or household purposes; [  ] business use; or [  ] farming
operations; and if checked here [  ] is being acquired with the proceeds of the
loan provided for in or secured by this agreement, and the Secured Party may
disburse such proceeds or any part thereof directly to the seller of the
Collateral.

         2.       The Collateral will be kept at
1515 Ringling Blvd., Ste. 800;  Sarasota,   Sarasota,   Florida, or if left
---------------------------------------------------------------
      (No. and Street)           (City)     (County)    (State)

blank, at the address shown at the beginning of this agreement; Debtor will
promptly notify Secured Party of any change in the location of the Collateral
within said state; and Debtor will not remove the Collateral from said state
without the written consent of Secured Party.

         3.       If the Collateral is acquired or used primarily for personal,
family or household purposes, or for farming operations use, Debtor's residence
in Florida is that shown at the beginning of this agreement and Debtor will
immediately notify Secured Party of any change in the location of said
residence.

         4.       If the Collateral is timber to be cut, minerals or the like
(including oil and gas), accounts resulting from the sale of such minerals at
the wellhead or minehead, crops and/or goods which are or are to become
fixtures, a legal description of the real estate to which the Collateral is
attached, located in ___________ County, Florida, is as follows;       N/A
                                                                 ---------------

-------------------------------------------------------------------------------.

and the name of the record owner is:
                                   --------------------------------------------;

and if this agreement is to be used as a Financing Statement, it will be filed
for record in the real estate records; and if the Collateral is attached to
real estate prior to the perfection of the security interest granted hereby,
Debtor will, on demand of Secured Party, furnish the latter with a disclaimer
or disclaimers, signed by all persons having an interest in the real estate, of
any interest in the Collateral that is prior to Secured Party's interest.

         5.       If the Collateral is acquired or used primarily for business
use and is of a type normally used in more than one state, whether or not so
used, and Debtor has a place of Business in more than one state, the chief
place of business of Debtor is:          1515 Ringling Blvd., Ste. 800
                                ------------------------------------------------
                                                (No. and Street)

                  Sarasota,             Sarasota,              Florida, or,
----------------------------------------------------------------------
                   (City)               (County)               (State)

if left blank, is that shown at the beginning of this agreement, and Debtor
will immediately notify Secured Party in writing of any change in Debtor's
chief place of business; and if certificates of title are issued or outstanding
with respect to any of the Collateral, Debtor will cause the interest of
Secured Party to be properly noted thereon.

         6.       Except for the security interest granted hereby, Debtor is
the owner of the Collateral free from any adverse lien, security interest, or
encumbrance; and Debtor will defend the Collateral against all claims and
demands of all persons at any time claiming the same or any interest thereon.

         7.       No Financing Statement covering any Collateral or any
proceeds thereof is on file in any public office; Debtor authorizes Secured
Party at Debtor's expense to file any Financing Statement or Statements
relating to the Collateral (without any Debtor's signature thereon) which
Secured Party deems appropriate, and Debtor irrevocably appoints Secured Party
as Debtor's attorney-in-fact to execute any such Financing Statement or
Statements in Debtor's name and to do such other acts and things, all as
Secured Party may request, to establish and maintain a valid security interest
in the Collateral (free of all other liens and claims whatsoever) to secure the
payment of the Obligations, including, without limitation, deposit with Secured
Party of any certificate of title issuable with respect to any of the
Collateral and notation thereon of the security interest hereunder. For purposes
of perfecting the security interest created by this agreement, a carbon,
photographic or other reproduction of this security agreement or a financing
statement will be sufficient to serve as a financing statement. If this
agreement is to be used as a Financing Statement, it is hereby stated that the
documentary stamps required by Chapter 201, Florida Statutes have been placed
on the promissory instruments secured hereby and will be placed on any
additional promissory instruments, advances or similar instruments that may be
secured hereby.

         8.       Debtor will not sell, transfer, lease, or otherwise dispose
of any of the Collateral or any interest therein, or offer so to do, without
the prior
<PAGE>
         9.       Debtor will at all times keep the Collateral insured against
loss, damage, theft, and such other risks as Secured Party may require in such
amounts and companies and under such policies and in such form, and for such
periods, as shall be satisfactory to Secured Party and each such policy shall
provide that loss thereunder and proceeds payable thereunder shall be payable to
Secured Party as its interest may appear (and Secured Party may apply any
proceeds of such insurance which may be received by Secured Party toward payment
of the Obligations, whether or not due, in such order of application as Secured
Party may determine and each such policy shall provide 10 days written minimum
cancellation notice to Secured Party; and each such policy shall, if Secured
Party so requests, be deposited with Secured Party; and Secured Party may act as
attorney for Debtor in obtaining, setting, and cancelling such insurance and
endorsing any drafts.

         10.      Debtor shall at all times keep the Collateral free from any
adverse lien, security interest, or encumbrance and in good order and repair
and will not waste or destroy the Collateral or any part thereof; and Debtor
will prevent the Collateral or any part thereof from being or becoming an
accession or fixture to other goods not covered hereunder; and Debtor will not
use the Collateral in violation of any statute or ordinance; and Debtor will
keep, in accordance with generally accepted accounting principles consistently
applied, accurate and complete records concerning the Collateral; at Secured
Party's request, will mark any of such records and all or any of the Collateral
to give notice of the security interest; and will permit Secured Party or its
agents to examine and inspect the Collateral and to audit and make abstracts of
such records or any of the Debtor's books, ledgers, reports, correspondence or
other records at any time, wherever located, and in connection therewith,
Secured Party or its agents may enter upon any premises of Debtor and Debtor
expressly waives any and all claims for damage or trespass or other injury
occasioned thereby.

         11.      Debtor will pay promptly when due all taxes and assessments
upon the Collateral or for its use or operation or upon this agreement or upon
any note or notes evidencing the Obligations, or any of them.

         12.      If any certificate of title may be issued with respect to any
of the Collateral, Debtor will cause Secured Party's interest hereunder to be
noted on the certificate and will deliver the original certificate to Secured
Party, Debtor, upon demand, will also deliver to Secured Party any documents of
title and any chattel paper representing or relating to the Collateral or any
part thereof, schedules, invoices, shipping or delivery receipts, purchase
orders, contracts or their documents representing or relating to purchases or
other acquisitions or sales, or leases or other dispositions of the Collateral
and proceeds thereof and any and all other schedules, documents and statements
which Secured Party may from time to time request.

         13.      At its option, Secured Party may discharge taxes, liens or
security interests or other encumbrances at any time levied or placed on the
Collateral may pay for insurance on the Collateral, and may pay for the
maintenance and preservation of the Collateral. Debtor agrees to reimburse
Secured Party on demand for any payment made, or any expense incurred, by
Secured Party, pursuant to the foregoing authorization. Until default, Debtor
may have possession of the Collateral and use it in any lawful manner not
inconsistent with this agreement and not inconsistent with any policy of
insurance thereon.

         14.      In the event that Secured Party deems it necessary to require
that the outstanding indebtedness be secured by additional property, Debtor
shall, upon demand by Secured Party, cause sufficient additional property to
become subject to Secured Party's security interest under this agreement.

         15.      Debtor shall be in default of this agreement upon the
happening of any of the following events or conditions: (a) failure of any
Obligor (which term as used herein shall mean each Debtor and each other party
primarily or secondarily or contingently liable on any of the Obligations) to
pay when due (whether by acceleration or otherwise), any amount payable on any
of the Obligations; (b) any warranty, representation, or statement made or
furnished to Secured Party by or on behalf of any Obligor proves to have been
false in any material respect when made or furnished; (c) loss, theft,
substantial damage, destruction, sale or encumbrance to or of any of the
Collateral, or the making of any levy, seizure, or attachment thereof or
thereon; (d) the death of any Obligor; (e) the filing of any petition under the
Bankruptcy Code, or any similar Federal or state statute, by or against any
Obligor; (f) the filing of an application for the appointment of a receiver
for, the making of a general assignment for the benefit of creditors by, or the
insolvency of any Obligor; (g) the entry of a judgment against any Obligor; (h)
the issuing of any attachment or garnishment or the filing of any lien, against
any property of any Obligor; (i) the taking of possession of any substantial
part of the property of any Obligor at the instance of any governmental
authority; (j) the dissolution, incompetency, consolidation or reorganization
of any Obligor.

         16.      Upon the occurrence of any such default or upon the happening
of any default as defined in any note evidencing any of the Obligations or in
any other agreement or Instrument securing or otherwise related to any of the
Obligations, or at any time thereafter, or whenever Secured Party feels insecure
for any reason whatsoever, Secured Party may, at its option, declare all
Obligations of each Debtor to Secured Party Immediately due and payable without
demand or notice of any kind and the same thereupon shall become and be due and
payable (but with such adjustments, if any, with respect to interest, or other
charges as may be provided for in the promissory note or other writing
evidencing such liability); shall have the remedies of a secured party under the
Uniform Commercial Code of Florida and any and all rights and remedies available
to it under any other applicable law; may set off against the Obligations, all
monies then owed to Debtor by Secured Party in any capacity whether or not due
and Secured Party shall be deemed to have exercised its right of set-off
immediately at the time its right to such election accrues even though charge is
made or entered on the books of Secured Party subsequent thereto; and upon
request or demand of Secured Party, Debtor shall, at its expense, assemble the
Collateral and make it available to Secured Party at a convenient place
acceptable to Secured Party; and Debtor shall promptly pay all expenses of
retaking, holding, preparing for sale, selling, or the like, all expenses of
collection of any and all the Obligations, all expenses of any repairs to any of
the Collateral and expenses of any repairs to any realty or other property to
which any of the Collateral may be affixed or be a part and all other expenses
of enforcement of rights hereunder, Expenses of retaking, holding, preparing for
sale, selling or the like, expenses of collection and other expenses of
enforcement of rights hereunder shall include Secured Party's reasonable
attorneys' fees and legal expenses. In connection with the exercise of any
rights available upon default, Secured Party or its agent may enter upon the
premises of Debtor and Debtor expressly waives any and all claims for damage,
trespass or other injury occasioned thereby. Unless the Collateral is perishable
or threatens to decline speedily in value or is of a type customarily sold on a
recognized market, Secured Party will give Debtor reasonable notice of the time
and place of any public sale thereof or of the time after which any private sale
or any other intended disposition thereof is to be made. The requirements of
reasonable notice shall be met if such notice is mailed, postage prepaid, to any
Debtor at the address of Debtor shown at the beginning of this agreement or at
any other address shown on the records of Secured Party, at least five days
before the time of the sale or disposition. Upon disposition of any Collateral,
Debtor shall be and remain liable for any deficiency; and Secured Party shall
account to Debtor for any surplus, but Secured Party shall have the right to
apply all or any part of such surplus (or to hold the same as a reserve against)
all or any of the Obligations of each Debtor to Secured Party, whether or not
they, or any of them, be then due, or in such order of application as Secured
Party may from time to time elect.

         17.      No waiver by Secured Party of any default shall operate as a
waiver of any other default or of the same default on a future occasion. No
delay or omission on the part of Secured Party in exercising any right or remedy
shall operate as a waiver thereof, and no single or partial exercise by Secured
Party of any right or remedy shall preclude any other or further exercise
thereof or the exercise of any other right or remedy. Time is of the essence of
this agreement. The provisions of this agreement are cumulative and in addition
to the provisions of any note secured by this agreement, and Secured Party shall
have all the benefits, rights and remedies of and under any note secured hereby.
If more than one party shall execute this agreement, the term "Debtor" shall
mean all parties signing this agreement and each of them, and all such parties
shall be jointly and severally obligated and liable hereunder. The singular
pronoun, when used herein, shall include the plural. If this agreement is not
dated when executed by the Debtor, the Secured Party is authorized, without
notice to the Debtor, to date this agreement. This agreement shall become
effective as of the date of this agreement. All rights of Secured Party
hereunder shall inure to the benefit of its successors and assigns; and all
Obligations of Debtor shall bind the heirs, executors, administrators,
successors and assigns of each Debtor.

         18.      This agreement has been delivered in the State of Florida and
shall be construed in accordance with the laws of Florida. Wherever possible,
each provision of this agreement shall be interpreted in such manner as to be
effective and valid under applicable law, but if any provision of this
agreement shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity,
without invalidating the remainder of such provision or the remaining
provisions of this agreement. This agreement may not be modified or amended nor
shall any provision of it be waived except by a writing signed by the parties.

         IN WITNESS WHEREOF, this agreement has been duly executed as of the
13th day of December, 1993

Signed, sealed and delivered
in the presence of:                                           [SEAL]
                                    --------------------------

                                                              [SEAL]
-----------------------------       --------------------------
                                    RADIO METRIX, INC.

                                  By: /s/                     [SEAL]
-----------------------------       --------------------------
                                            Debtor<PAGE>
                                                                  EXHIBIT 10.22

                                   Agreement

         THIS AGREEMENT is made and entered into as of this 18th day of March,
1992, by and between ROBERT WILSON ("Mr. Wilson") and RADIO METRIX INC.
("RMI").

                                  WITNESSETH:

         WHEREAS, Arvin Brent Simon has developed technology for a sensing
device utilizing radio waves in a unique fashion (herein the "TECHNOLOGY"); and

         WHEREAS, Arvin Brent Simon, together with David Jones, Scott
Morneweck, Roger Keith and Thomas Cudnik (herein "RMC") have assigned all
rights to said TECHNOLOGY to SDR Metro, Inc, a corporation organized by them to
develop the TECHNOLOGY; and

         WHEREAS, SDR Metro, Inc. has entered into an exclusive, worldwide,
perpetual License Agreement with RMI concerning all applications of the
TECHNOLOGY; and

         WHEREAS, Mr. Wilson previously entered into an agreement with RMC, an
unincorporated entity doing business for the benefit of David Jones, Scott
Morneweck, Roger Keith, Thomas Cudnik, and Arvin Brent Simon (herein
collectively referred to as "RMC"), providing Mr. Wilson with certain marketing
rights, as specified in Exhibit "A" hereto; and

         WHEREAS, Exhibit "A" and the marketing rights granted to Mr. Wilson
thereunder were subsequently terminated by RMC pursuant to Exhibit "B"; and

         WHEREAS, Mr. Wilson attempted to assign part or all of his rights
under Exhibit "A" to Magnetic Maulburg, a German corporation, pursuant to
Exhibit "C"; and

         WHEREAS, Mr. Wilson introduced RMI, or its principals, Mr. Stephen
Michael and Mr. Samuel Duffey, to RMC for the purposes of attempting to
establish a commercialization agreement concerning the TECHNOLOGY; and

         WHEREAS, RMI had previously invited Mr. Wilson to be a participant and
stockholder of RMI as compensation for Mr. Wilson's introduction and
anticipated ongoing efforts to participate in the commercialization of the
TECHNOLOGY; and

         WHEREAS, RMI has withdrawn its invitation to Mr. Wilson to serve as a
participant or stockholder in RMI upon learning the correct facts and
circumstances surrounding Mr. Wilson's business and contractual relationships
with both RMC and Magnetic Maulburg; and

<PAGE>
         WHEREAS, RMI wishes to grant Mr. Wilson a royalty interest in future
potential revenues of RMI resulting solely from the TECHNOLOGY as sole and
exclusive compensation to Mr. Wilson for his introduction of RMI to RMC and any
prior or future assistance which he may provide in the commercialization of
TECHNOLOGY; and

         WHEREAS, RMI and Mr. Wilson wish to enter into this Agreement as the
definitive and exclusive statement of their understanding and agreement.

         NOW, THEREFORE, for good and valuable consideration, in hand received,
the parties hereto mutually agree as follows:

         1.       Compensation. RMI hereby agrees to pay to Mr. Wilson as Mr.
Wilson's sole and exclusive compensation from RMI and its stockholders and
principals an amount equal to five percent (5%) of the royalty revenue received
by RMI from the TECHNOLOGY, less any amounts paid or required to be paid to RMC
or SDR Metro, Inc. for the licensing rights to said TECHNOLOGY. In the event
RMI becomes the manufacturer or marketer of products incorporating the
TECHNOLOGY, RMI shall, in lieu of the foregoing compensation, pay Mr. Wilson
compensation equal to five percent (5%) of the adjusted gross revenues of RMI
from such sales, which involve the manufacture or marketing of products by RMI.
"Adjusted Gross Revenue" shall mean gross revenues from the sale of products
manufactured or marketed by RMI and incorporating the TECHNOLOGY, less all
costs of manufacturing, licensing, fees and royalties, manufacturing,
advertising, and cost of sales. The compensation provided for herein shall
continue for the life of the license arrangement between RMI and SDR Metro,
Inc. concerning the TECHNOLOGY. The Compensation provided for in this Agreement
is related solely and exclusively to the TECHNOLOGY described in the Agreement
dated March 14, 1992 between RMI and SDR Metro, Inc. In the event of revenues
earned by RMI for development purposes or for signing license arrangements, but
which do not constitute advance royalty fees, no compensation shall be paid to
Mr. Wilson hereunder. Should RMI receive compensation from the sale of the
TECHNOLOGY or a license fee that does not require ongoing royalty fees, RMI
shall pay Mr. Wilson an amount equal to 5% of RMI's net proceeds. For purposes
hereof, "net proceeds" shall mean gross proceeds less costs of procuring and
closing the sale or license, and royalty or other fees to be paid to SDR Metro,
Inc.

         2.       Buy-Out. Mr. Wilson agrees that the compensation arrangement
may be purchased by RMI or its assigns at any time for an aggregate purchase
price not to exceed $200,000, with all royalties earned during the first 24
months of this Agreement, constituting being credited against the purchase
price.

         3.       No Claim. Mr. Wilson expressly acknowledges and agrees that
he has no right, claim, or interest in or to the TECHNOLOGY. Furthermore, Mr.
Wilson acknowledges and agrees that he has no right, title, or interest in or
to, or any claim against, RMI or

                                       2
<PAGE>
any of its principals, save and except only his right to compensation as set
forth in paragraph 1 of this Agreement. Mr. Wilson acknowledges and agrees that
the Marketing Agreement designated Exhibit "A" hereto is void and of no
continuing effect and that he has no marketing rights or other interest in or
to the TECHNOLOGY arising thereunder. Simultaneously with the execution of this
Agreement, Mr. Wilson agrees to execute the General Release attached hereto as
Exhibit "D".

         4.       Proper Conduct. Mr. Wilson acknowledges and agrees that the
conduct of Duffey & Davis, P.A., and Attorney Samuel S. Duffey have been
appropriate and ethical at all times in connection with this transaction. Mr.
Wilson acknowledges that the purpose of this paragraph is to verify and confirm
that this Agreement is viewed by Mr. Wilson as consistent with the legal
responsibility of Duffey & Davis, P.A., and Mr. Duffey and does not in any
fashion constitute a conflict of interest or conduct which is viewed by Mr.
Wilson as unethical. Mr. Wilson acknowledges that he has been advised to
consult with and rely upon the advice of independent legal counsel and,
further, Mr. Wilson acknowledges and agrees that he has not relied upon the
advice of Mr. Duffey or Duffey & Davis, P.A., concerning this Agreement or
matters relating to RMC, RMI, or the TECHNOLOGY. Mr. Wilson acknowledges that,
while he consulted with Mr. Duffey concerning RMC and the TECHNOLOGY, his
marketing agreement was subsequently terminated by RMC, and he subsequently
requested of his own volition and with no suggestion from Mr. Duffey that Mr.
Duffey and Mr. Michael take over the project of attempting to commercialize the
TECHNOLOGY for their own interests and not in an attorney/client or other
confidential relationship with Mr. Wilson. Mr. Wilson acknowledges and agrees
that should any contention that Mr. Duffey or Duffey & Davis, P.A., acted other
than in a proper, correct, and ethical manner be made in the future by Mr.
Wilson, such contention would be for the sole purpose and intent of slandering
or adversely affecting the reputation of Mr. Duffey and would be actionable as
an intentional wrongdoing on the part of Mr. Wilson. Mr. Wilson acknowledges
and agrees that this paragraph 4 is a material inducement for RMI to enter into
this Agreement.

         5.       Confidentiality. Mr. Wilson acknowledges and agrees that any
and all information that he holds concerning the TECHNOLOGY is confidential and
cannot be disclosed by him to any third party without the prior permission or
approval of RMI. In furtherance of this confidentiality provision and not in
limitation thereof, Mr. Wilson shall execute, simultaneously with the execution
of this Agreement, the Confidentiality Agreement attached hereto as Exhibit
"E".

         6.       Covenant Not to Compete. Mr. Wilson agrees that during the
term of this Agreement and for a period of five years thereafter, he shall not,
either directly or indirectly, engage in any activity which is competitive with
the TECHNOLOGY licensed by

                                       3
<PAGE>
RMI from SDR Metro, Inc. For purposes hereof, activities competitive with the
TECHNOLOGY shall include, but not be limited to, any development, design,
marketing, commercialization, or manufacture of any product or any technology
which has a use or function similar to that served by the TECHNOLOGY, or which
may be served by the TECHNOLOGY during the term of this Agreement ("Competitive
Activity"). Indirectly engaging in any Competitive Activity shall include, but
not be limited to, serving as an officer, director, owner, partner,
shareholder, or agent or employee of any entity engaged in any Competitive
Activity.

         7.       Beneficial Party. Each of the agreements, covenants, and
representations of Mr. Wilson contained in this Agreement or any exhibit hereto
shall inure to the benefit of and shall be enforceable by SDR Metro, Inc., as
well as RMI and its principals.

         8.       Miscellaneous. This Agreement constitutes the entire
understanding of the parties and shall not be amended or otherwise altered,
except in writing and executed by the parties hereto. This Agreement shall be
governed by and construed in accordance with the laws of the state of Florida.
This Agreement shall not be construed more stringently against any party,
regardless of who may have been the draftsman. Any dispute arising under this
Agreement or any of the exhibits attached to this Agreement shall be resolved
by binding arbitration before the American Arbitration Association. Arbitration
shall be the sole and exclusive method for resolving any dispute or enforcing
this Agreement, and arbitration shall be seated solely in Sarasota, Florida,
and shall be before the American Arbitration Association. The findings of
arbitrators shall be final and binding and may be reduced to a judgment in any
court of competent jurisdiction.

         IN WITNESS WHEREOF, the parties hereto set their hands and seals on
the day and year first above written.

                                    MR. WILSON

                                    By: /s/ Robert Wilson
                                       ----------------------------------------
                                       ROBERT WILSON

                                    RMI
                                    Radio Metrix Inc.

                                    By: /s/ Stephen Michael, Pres.
                                       ----------------------------------------
                                       STEPHEN MICHAEL, President

                                       4
<PAGE>
                            NON-DISCLOSURE AGREEMENT

Name:                           ROBERT A. WILSON
                    ----------------------------------------

Title:
                    ----------------------------------------

Address:                       1516 SO ORANGE AVE.
                    ----------------------------------------

City/state:                       SARASOTA, FL
                    ----------------------------------------

Zip:                                  34239
                    ----------------------------------------

This will confirm the Agreement under which I will disclose to you information
and ideas that are considered confidential company information of SDR METRO,
INC. and RADIO METRIX INC.

It is understood that you will receive this disclosure in confidence and that
you will not use the information disclosed or disclose it to any third parties
or make any use of company information and ideas without prior written consent
from sDR METRO, INC. and RADIO METRIX INC.

The foregoing obligations shall not apply:

1.       To information which is or becomes publicly known other than by your
         failure to observe the above confidentiality obligations;

2.       To information which you subsequently receive from a third party who
         is not under similar confidentiality obligations to SDR METRO, INC.
         and RADIO METRIX INC. with respect to this information;

3.       To information which was already in your possession prior to this
         disclosure as proven by your records; and

4.       After five years from the date of this Agreement.

Please indicate your acceptance of the terms of this Agreement by signing a
copy of this Agreement and returning it to SDR METRO, INC. and RADIO METRIX
INC.

ACCEPTED BY:     /s/ Robert Wilson                   3-18-92
                ------------------------------------------------
                      Signature                        Date

APPROVED BY:     /s/ Stephen A. Michael              3-18-92
                ------------------------------------------------
                      Signature                        Date

<PAGE>
                                  EXHIBIT "A"
                                   AGREEMENT

         THIS AGREEMENT made entered into at Cleveland, Ohio on this 24th day
of August, 1991 by and between Robert A. Wilson (herein called "Wilson") and
Radio Metrix Company in Euclid, Ohio, (herein called (RMC)) witnesseth:

         WHEREAS by cooperative effort of the parties a working prototype has
been produced, and

         WHEREAS initial marketing surveys have been conducted by Wilson, and

         WHEREAS Simon has assigned the patent and his responsibilities to a
new Corporation known as RMC and RMC together with Simon shall exclusively
manufacture and perform research and development as necessary to the product,
and

         WHEREAS all commercialization of the product will be conducted by
Wilson, and

         WHEREAS the parties wish to reduce to writing their agreement;

         NOW, THEREFORE in consideration of the mutual covenants hereinafter
set forth it is hereby agreed between the parties as follows:

                            ARTICLE I - DEFINITIONS

         As used herein the words capitalized in this article shall have the
meaning or identity set forth after each word.

A.       AGREEMENT: This Agreement

B.       RMS: Radio-metric proximity sensor using state-of-the-art electronics
to produce a signal to reverse or simply halt movement of a given product to
effectively prevent contact.

C.       CORPORATION: A new Corporation to manufacture and market RMS products.

D.       PRODUCT: The product shall consist of the RMS used specifically with
barrier gates, sliding gates, garage doors and all other forms of vehicle or
pedestrian access control using safety edge protection.

E.       MARKET: All industries involved with the application of the product
within the entire territories of Canada, U.S., Europe, Australia.

<PAGE>
         RMC hereby gives assignment to Wilson for exclusive sales and
marketing of the product and agrees that no other assignment shall be given
except where Wilson and RMC agree to offer a licensed agreement to include
compensation paid to both parties.

                              ARTICLE II - DUTIES

A.       Wilson shall perform in the following duties for the Corporation.

         a.       Wilson shall be responsible for sales and marketing of all
products relating to RMS. These duties will include the usual activities
performed by a marketing department in promotion, selling and distribution of
the products to any and all markets identified by Wilson or others.

         b.       Wilson shall arrange financing for the Corporation. Financing
shall cover such items as organizational costs, research and development,
production and marketing of all products.

B.       Simon shall perform in the following duties for the Corporation.

         a.       Simon will manage the development of prototypes of RMS
products as needed.

         b.       Simon shall be responsible for all manufacturing including
quality assurance and control.

                           ARTICLE III - COMPENSATION

         A.       Wilson shall be compensated by receiving the difference
between the agreed upon costs to Wilson and his selling price (margin). The
term "costs" shall also include the net profits of the Corporation (RMC).
Wilson shall receive the compensation amount presented in the Marketing Expense
as outlined in the business plan (Exhibit #l) until such time as his margin is
equal to the Marketing Expense, reviewed quarterly. At such time when
compensation is attained then the amount paid as Marketing Expense ceases, and
commission only will be paid thereafter. When a license agreement or buy-out of
the product type occurs, Wilson will receive 25% of royalty and buy-out amount
as compensation.

                       ARTICLE IV - SALE OR LICENSING RMS

         Should the Corporation decide to license or sell the RMS either in its
entirety of to individual companies for specific uses, Wilson shall be
compensated by receiving 25% of the sale price (if sold) and 25% of the
royalties paid to the Corporation by the RMS licensing organization(s). Any
payments due Wilson under royalties received from licensing the product shall
continue during Wilson's life and upon his death a computation of business on
the books will be paid to his estate and heirs, and no future claims against
RMC shall be paid or due.

<PAGE>
                     ARTICLE V - PERSONAL SERVICE CONTRACT

         This Agreement is one for personal service on behalf of Wilson,
therefore, it cannot be assigned by Wilson without the prior written consent of
RMC.

                           ARTICLE VI - USE OF TERMS

         Wherever a singular word is used in this Agreement, it shall be
considered as meaning the plural where applicable and wherever the context
permits or requires, and when the singular and/or neuter pronouns are used
herein, the same shall be construed as including all persons and Corporations
designated respectively as Principal or Representative in the heading of this
instrument wherever the context requires.

                          ARTICLE VII - APPLICABLE LAW

         This Agreement shall be construed and interpreted under and in
accordance with the laws of the State of Ohio.

                       ARTICLE VIII - LEGAL CONSTRUCTION

         In case any one or more of the provisions contained in this Agreement
shall be held for any reason to be invalid, illegal or unenforceable in any
respect, such invalidity, illegality or unenforceability shall not affect any
other provisions hereof and this Agreement shall be construed as if said
invalid, illegal or unenforceable provisions has never been contained herein.

                    ARTICLE IX - PRIOR AGREEMENTS SUPERSEDED

         This Agreement contains the entire understanding and contract between
the parties and all other prior written or oral agreements, understandings or
arrangements are hereby revoked.

                       ARTICLES X - BENEFIT OF AGREEMENT

         This agreement shall be binding upon and inure to the benefit of the
parties hereto, their respective heirs, personal representatives, successors
and assigns.

                           ARTICLE XI - MODIFICATION

         No amendment or modification of this agreement shall be binding upon
Wilson and/or RMC unless in writing and signed and dated by the party to be
charged herewith.

<PAGE>
                           ARTICLE XII - COUNTERPARTS

         This Agreement may be executed in counterparts and when properly
executed each counterpart shall be considered an original.

                   ARTICLE XIII - NON-PERFORMANCE/TERMINATION

         This agreement will be considered null and void if:

                  1.       If RMC fails to perform the designs outlined in the
                           business plan within a reasonable benchmark for
                           their completion.

                  2.       If Wilson fails to perform reasonable marketing
                           expectations outlined the business plan.

         IN WITNESS WHEREOF the parties have hereunto set their hands this day
of August 24th, 1991.

                                    By: /s/ David Jones, President, RMC
                                       ----------------------------------------
                                    David Jones, President, RMC

                                    /s/ A. Brent Simon, Director of Design, RMC
                                    -------------------------------------------
                                    A. Brent Simon, Director of Design, RMC

                                    /s/ Robert A. Wilson
                                    -------------------------------------------
                                    Robert A. Wilson, Marketing Director

<PAGE>
                                  EXHIBIT "B"
                             RADIO METRIX COMPANY
-------------------------------------------------------------------------------

                                                               November 8, 1991

Mr. Robert A. Wilson
1516 Orange Ave. South
Sarasota, FL. 34237

Dear Mr. Wilson:

Since, you have ceased all communications with us, and refuse to return our
phone messages we assume the following:

         1.       You are unable to secure financing to our August 1991
                  Business Plan.

         2.       You are no longer interested in fulfilling your obligations
                  under our agreement entered into on August 24th, 1991 by and
                  between Robert A. Wilson and RADIO METRIX COMPANY (RMC).

RMC sees no alternative but to terminate its agreement with you, due to lack of
funds, within seven (7) days from the writing of this letter. Termination of
our agreement is based on your non-performance of duties (Article II) paragraph
(A) subparagraph (b) "Wilson shall arrange financing for the Corporation.....".
Our agreement will be considered null and void under (Article XIII Item 2) "If
Wilson fails to perform reasonable marketing expectations outlined in the
business plan".

If you take exception to this letter please make your intentions known by
registered mail.

Sincerely,

RADIO METRIX COMPANY

By: /s/ David Jones, President, RMC
David Jones
President, RMC

By: /s/ A. Brent Simon, Director of Design, RMC
Arvin Brent Simon
Director of Design, RMC

DJ/ABS/sm
-------------------------------------------------------------------------------
27367 Tunosten Road  Euclid, Ohio 44133 USA

<PAGE>
[USPS LOGO]       CERTIFIED MAIL RECEIPT
                  No Insurance Coverage Provided
                  Do not use for International Mail
                  (See Reverse)

Sent to
MR. ROBERT A. WILSON

Street & No.
1516 ORANGE AVE. SOUTH

P.O. State & ZIP Code
SARASOTA FL 34237

Postage
                           $ 29

Certified Fee
                            100

Special Delivery Fee

Restricted Delivery Fee

Return Receipt Showing
To Whom & Date Delivered
                            100

Return Receipt Showing to
Whom, Date & Addressee's
Address

TOTAL Postage & Fees       $229

Postmark or Date
Nov. 8, 199?

<PAGE>
                                  EXHIBIT "C"
                                   AGREEMENT

This Agreement entered into this 11th day of October, 1991 by and between

                  Robert A. Wilson
                  1516 South Orange Ave.
                  Sarasota, FL 34239

and               MAGNETIC ELEKTROMOTOREN GMBH
                  Hauptatrasse 6
                  D7864 Maulburg/Germany

1)       Robert A. Wilson agrees to release the worldwide exclusive marketing
         rights of the Radio Metric Sensor (RMS) to the Magnetic Group of
         Companies for all applications in barrier gate sensing including toll
         booth gates and window/light dome sensing.

2)       Robert A. Wilson agrees to release the non-exclusive marketing rights
         for all applications of the RMS in combination with Magnetic actuators
         (i.e. linear actuators, swing - and sliding gates, swing door
         actuators etc.)

3)       The marketing rights do not include the application of overhead
         garage doors within the U.S.

4)       Robert A. Wilson will not demand from Magnetic any kind of
         compensation for these marketing rights.

5)       Magnetic will evaluate a proposal being presented by Radio Metrix
         Company (RMC) for the development and production of the RMS adapted to
         the appropriate application. Refusal of the use of RMS will void all
         rights as stated above.

                                             MAGNETIC ELEKTROMOTOREN GMBH

/s/ Robert A. Wilson                         /s/ A. Weiss       /s/ G. Hafner
--------------------------                   ----------------------------------
   (Robert A. Wilson)                           (A. Weiss)         (G. Hafner)

<PAGE>
GENERAL RELEASE                                                   RAMCO FORM 22

                        Know All Men By These Presents:

That I
    (I, We)

                  ROBERT WILSON

first party for and in consideration of the sum of        $10.00
         Dollars or other valuable considerations received from or on behalf of

         Radio Metrix Inc., Radio Metrix Company, Genius Products, Inc.,
         SDR Metro, Inc., Samuel S. Duffey, Duffey & Davis, P.A. and
         Stephen Michael.

second party the receipt whereof is hereby acknowledged

         ???????????

         HEREBY remise, release, acquit, satisfy, and forever discharge the
said second party, of and from all, and all manner of action and actions, cause
and causes of actions, sales, debts, dues, sums of money, accounts reckonings,
bonds, bills, ????, covenants, contracts, controversies, agreements, promises,
variances, trespasses, damages, judgments, executions, claims and demands
whatsoever, in law or in equity, which said first party ever had, now has, or
which any personal representative, successor, heir or assign of said first
party, hereafter can, shall or may have against said second party, for, upon or
by reason of any matter, cause or thing whosoever, from the beginning of the
world to the day of these presents.

         In Witness Whereof, I have hereunto set my hand and seal this 18th day
of March, A.D., 1992

Signed, sealed and delivered in presence of:

/s/                                          /s/ Robert Wilson             L.S.
------------------------------               -----------------------------
                                             ROBERT WILSON
/s/ Cathy                                                                  L.S.
------------------------------               -----------------------------

STATE OF FLORIDA,
COUNTY OF SARASOTA

                           I HEREBY CERTIFY that on this day, before me, an
officer duly authorized in the State aforesaid and in the County aforesaid to
take acknowledgements, personally appeared ROBERT WILSON to me known to be the
person described in and who executed the foregoing instrument and who
acknowledged before me that he executed the same.

         WITNESS my hand and official seal in the County and State last
aforesaid this 18th day of March A.D. 1992.

                                             /s/ Cathy ???
                                             ----------------------------------

The Instrument prepared by:                  NOTARY PUBLIC, STATE OF FLORIDA,
Samuel S. Duffy                              MY COMMISSION EXPIRIES:
                                             Nov. 1, 1995.
Authors: Duffy & Davis, P.A.                 BONDED THRU NOTARY PUBLIC
         1515 Ringling Blvd., Suite 800      UNDERWRITERS.
         Sarasota, FL 34236

<PAGE>
                               RADIO METRIX, INC.

TELEPHONE                                                             FAX
(941) 355-9361                                                    (941)355-9373

                            4400 INDEPENDENCE COURT
                               SARASOTA, FL 34234

September 17, 1999

Mr. Robert Wilson
1516 South Orange Avenue
Sarasota, FL 34239

Dear Mr. Wilson:

         For almost seven years, Radio Metrix, Inc. has neither received
contact from you nor been advised by you with regard to contact information or
your current location. Both Sam and I are disappointed that you have elected to
abandon Radio Metrix, Inc. and your responsibilities under the Agreement. Your
decision to make yourself unavailable on a long-term basis and to provide no
assistance or support to Radio Metrix, Inc., as required under the Agreement,
constitutes a material breach of the Agreement entered into on March 18, 1992
between you and Radio Metrix, Inc. The purpose of this correspondence is to
exercise one last effort to provide you with formal notice that Radio Metrix,
Inc. considers the Agreement with you to be terminated by virtue of your
breach. You are further notified that Radio Metrix, Inc. intends to have no
ongoing or continuing relationship with you. In the event that you disagree
with the Company's position, we invite you to participate in an arbitration
proceeding in Sarasota, Florida as designated in the Agreement.

Very truly yours,
RADIO METRIX, INC.

/s/ Stephen A. Michael, President
------------------------------------------
Stephen A. Michael, President

SAM/nal

<PAGE>
US Postal Service
Receipt for Certified Mail
No Issuance Coverage Provided
Do not use for International Mail (See reverse)

Sent to
Robert Wilson

Street & Number

Post Office, State & ZIP Code
34239

Postage
                           $ 33

Certified Fee
                            140

Special Delivery Fee

Restricted Delivery Fee

Return Receipt Showing
to Whom & Date Delivered
                            125

Return Receipt Showing to
Whom, Date & Addressee's
Address

TOTAL Postage & Fees       $298

Postmark or Date
Sep. 28, 1999

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