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                                                                   EXHIBIT 10.27
                                                                   -------------

THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, OR APPLICABLE STATE, SECURITIES LAWS, NOR THE SECURITIES LAWS OF
ANY OTHER JURISDICTION.  THEY MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF
AN EFFECTIVE REGISTRATION STATEMENT UNDER THOSE SECURITIES LAWS OR PURSUANT TO
AN EXEMPTION THEREFROM.

                                  AXCESS INC.

                            Senior Promissory Note
                            ----------------------


$400,000.00                                                    December 14, 2000

     AXCESS INC., a Delaware corporation having its principal place of business
in Carrollton, Texas (the Company"), for value received, hereby promises to pay
to the order of J.P. Morgan Investment Corporation, or its transferees or
assigns (the "Holder"), on September 21, 2001 (the "Final Maturity Date"), the
principal sum of FOUR HUNDRED THOUSAND UNITED STATES DOLLARS (U.S. $400,000.00),
or the aggregate unpaid amount of all principal outstanding hereunder, whichever
is less, together with interest on the outstanding principal balance hereunder
from time to time, at the rate of six and sixty-four-one-hundredths percent
(6.64%) per annum, calculated on the basis of the actual number of days elapsed
over a 364- (or 365-) day year (the "Base Interest Rate").  Each payment
received by the Holder hereunder shall be applied first to the interest accrued
on and then to the unpaid principal amount of this Note.

     This Note is given in extension and partial renewal of that certain Senior
Promissory Note, dated June 25, 1997, made by the Company and payable to the
order of the Holder, as extended and modified by Note Payable Conversion
Agreement, dated March __, 1999, between the Company and Holder (such Senior
Promissory Note, as so extended and modified, being herein referred to as the
"Original Note").  The Original Note was one of the Senior Promissory Notes
("Notes") issued and sold by the Company under the Note Purchase Agreement,
dated as of June 25, 1997, as amended on December 29, 1997 (the "Note Purchase
Agreement"), among the Company, the initial Holder and the other purchaser named
therein.

     Payment of principal and interest shall be made in such coin or currency of
the United States of America as at the time of payment shall be legal tender for
the payment of public and private debts.  All such payments shall be paid by
wire transfer of Federal funds in accordance with the written instructions of
the Holder or, in the absence of such instructions, by check mailed to the
Holder at the address last given to the Company by the Holder in writing for
such purpose.

     This Note may be prepaid in whole or in part at any time at the option of
the Company, without premium or penalty, upon not less than 20 days' prior
written notice to the Holder.

     If any time after the date hereof the Company or any subsidiary completes
(i) an equity or long-term debt financing, (ii) a sale of assets outside the
ordinary course of business, (iii) a sale-leaseback or similar financing, or
(iv) a joint venture or other strategic partnership (any such transaction, an
"Extraordinary Transaction"), and such Extraordinary Transaction results in cash
proceeds to the Company (together with the cash proceeds of any other
Extraordinary Transaction

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after the date hereof, to the extend not previously applied) in excess of
$5,000,000 (such excess, the "Available Cash Proceeds"), then a portion of
Available Cash Proceeds shall be applied to prepay this Note as provided herein.

     The Company hereby waives presentment for payment, demand for payment,
notice of nonpayment, protest and notice of protest.

     This Note may be prepaid in whole or in part (in amounts not less than
$50,000) at any time at the option of the Company, upon not less than 20 days'
prior written notice to the Holder, without premium or penalty; provide,
                                                                -------
however, that any amounts prepaid hereunder on any of the other Notes shall be
-------
applied to prepay this Note and all other Notes issued under the Note Purchase
Agreement on a pro rata basis, in proportion to the respective aggregate unpaid
               --- ----
principal amounts thereof.

     This Note shall be binding upon the Company and its successors and assigns
and shall inure to the benefit of the Holder and its successors, assigns and
transferees.

     If the Company fails to pay any amount of principal or interest when due,
the entire unpaid principal of and accrued interest on outstanding principal
amounts hereunder shall forthwith become absolutely due and payable without any
notice, demand, protest or presentment whatsoever, all of which are hereby
expressly waived.  Interest on any past due principal amount, whether at the
Final Maturity Date or by acceleration, shall accrue at a rate equal to the Base
Interest Rate plus five percent (5%) per annum, but in no event higher than the
maximum legal rate of interest permitted under applicable law.  In addition, if
any amount payable hereunder shall remain unpaid after 3:00 p.m., New York City
time, on the Final Maturity Date, the Company shall pay to the record Holder of
this Note at such time the Additional Consideration provided for in the Note
Purchase Agreement (as such term is defined therein).  The Company shall pay to
the Holder all costs and expense of collection and enforcement relating to this
Note, including without limitation reasonable attorneys' fees and expenses.

     This Note shall be governed by and construed in accordance with the laws of
the State of New York, without reference to its rules as to conflicts of law.
Any judicial proceeding brought against the Company to enforce, or otherwise in
connection with, this Note may be brought in any court of competent jurisdiction
the City of New York, and, by execution and delivery of this Note, the Company
(i) accepts, generally and unconditionally, the nonexclusive jurisdiction of
such courts and any related appellate court and irrevocably agrees to be bound
by any final judgment rendered thereby in connection with this Note and (ii)
irrevocably waives any objection it may now or hereafter have as to the venue of
any such proceeding brought in such a court or that such a court is in
inconvenient forum.

     THE COMPANY HEREBY UNCONDITIONALLY AND IRREVOCABLY WAIVES TRIAL BY JURY IN
ANY ACTION, SUIT, COUNTERCLAIM OR CROSS CLAIM ARISING OUT OF OR IN CONNECTION
WITH THIS NOTE.

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     IN WITNESS WHEREOF, the Company has caused this Note to be signed by its
Vice President and has caused its corporate seal to be affixed and attested by
its Secretary.

                               AXCESS INC.


                               By: /s/ James R. Craig
                                   -----------------------------------------
                                   Name: James R. Craig
                                         -----------------------------------
                                   Title: Chief Financial Officer and Secretary
                                          -------------------------------------

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