<PAGE>
                                                                   EXHIBIT 10.17

             AMENDMENT NUMBER FIVE TO LOAN AND SECURITY AGREEMENT

            THIS AMENDMENT NUMBER FIVE TO LOAN AND SECURITY AGREEMENT (this
"Amendment"), dated as of December 23, 2002, is entered into between and among,
on the one hand, the lenders identified on the signature pages hereof (such
lenders, together with their respective successors and assigns, are referred to
hereinafter each individually as a "Lender" and collectively as the "Lenders"),
FOOTHILL CAPITAL CORPORATION, a California corporation, as the arranger and
administrative agent for the Lenders ("Agent"), and, on the other hand, HYPERCOM
CORPORATION, a Delaware corporation ("Parent"), and each of Parent's
Subsidiaries identified on the signature pages hereof (such Subsidiaries are
referred to hereinafter each individually as a "Borrower", and individually and
collectively, jointly and severally, as the "Borrowers"), with reference to the
following:

                               W I T N E S S E T H

            WHEREAS, Borrowers and Parent previously entered into that certain
Loan and Security Agreement, dated as of July 31, 2001, as amended by Amendment
Number One to Loan and Security Agreement dated as of October 3, 2001, by
Amendment Number Two to Loan and Security Agreement dated as of November 13,
2001, by Amendment Number Three to Loan and Security Agreement dated as of
February 13, 2002, and by Amendment Number Four to Loan and Security Agreement
dated as of June 24, 2002 (as the same may be further amended, restated,
supplemented, or otherwise modified from time to time, the "Loan Agreement"),
with Agent and Lenders pursuant to which Lenders have made certain loans and
financial accommodations available to Borrowers and Parent;

            WHEREAS, Borrowers have requested that the Lender Group consent to
the sale of certain assets of Hypercom GmbH, an organization organized under the
laws of Germany, pursuant to that certain Asset Purchase Agreement, dated as of
December 27, 2002, by and among Hypercom GmbH and Service Planet GmbH,
previously provided to Agent (the "German Transaction");

            WHEREAS, Borrowers have requested that the Lender Group consent to
the sale of certain assets pursuant to that certain Asset Purchase Agreement,
dated as of December 31, 2002, by and among Hypercom U.S.A., Inc., a Delaware
corporation ("Hypercom U.S.A.") and MTXEFS, Incorporated, a California
corporation, previously provided to Agent (the "MicroTrax Transaction"; the
MicroTrax Transaction, together with the German Transaction, are referred to
hereinafter collectively as the "Designated Transactions");

            WHEREAS, Borrowers have requested that the Loan Agreement be amended
as set forth herein; and

            WHEREAS, subject to the satisfaction of the conditions set forth
herein, the Lender Group is willing to so consent to the amendment of the Loan
Agreement and to the consummation of the Designated Transactions.


                                       1
<PAGE>

            NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties agree to amend the
Loan Agreement as follows:

1. DEFINITIONS. Capitalized terms used herein and not otherwise defined herein
shall have the meanings ascribed to them in the Loan Agreement, as amended
hereby.

2. AMENDMENTS TO LOAN AGREEMENT.

(a) Section 1.1 of the Loan Agreement is hereby amended by adding the following
defined term in proper alphabetical order:

            "Fifth Amendment" means that certain Amendment Number Five to Loan
and Security Agreement, dated as of December 23, 2002, among Lenders, Agent,
Parent and Borrowers.

            "Fifth Amendment Effective Date" means the date, if ever, that all
of the conditions set forth in Section 4 of the Fifth Amendment shall be
satisfied (or waived by the Lenders in their sole discretion).

            "Hypercom Sweden" means Hypercom Financial Terminals AB (Sweden), an
organization organized under the laws of Sweden.

            "Permitted Swedish Transaction Indebtedness" means Indebtedness
incurred in respect of the Swedish Transaction.

            "Swedish Transaction" means that certain loan from Hypercom Sweden
to Parent in a maximum aggregate amount outstanding at any one time not to
exceed $1,500,000, which amount is due and payable on or before June 30, 2003,
which will accrue interest at a per annum rate equal to 5.50%, and which on the
terms set forth in that certain promissory note dated December 20, 2002, made by
Hypercom Sweden in favor of Parent which was previously provided to Agent.

      (b) Section 1.1 of the Loan Agreement is hereby amended by amending the
definition of "Permitted Investments" as follows: (i) deleting the word "and"
before item (d) of such definition, and (ii) deleting the period at the end of
item (d) and replacing it with the following language: ", (e) Investments
consisting of the Hedging Obligations described in Section 7.1(k), and (f)
Investments in respect of the Swedish Loan Transaction."

      (c) Section 1.1 of the Loan Agreement is hereby amended by amending the
definition of "Permitted Liens" as follows: (i) deleting the word "and" before
item (l) of such definition, and (ii) deleting the period at the end of item (l)
and replacing it with the following language: ", and (m) the deposit of cash and
cash equivalents, in an aggregate amount outstanding at any one time not to
exceed $1,500,000, to secure the Hedging Obligations described in Section
7.1(k)."


                                       2
<PAGE>

      (d) Section 2.11 of the Loan Agreement is hereby amended by inserting the
following new clause (d) following clause (c):

            "(d) FIFTH AMENDMENT FEE. On or before the Fifth Amendment Effective
Date, Borrower shall pay to Agent an amendment fee of $20,000 in immediately
available funds, which fee shall be fully earned when paid."

      (e) Section 7.1 of the Loan Agreement is hereby amended as follows: (i)
deleting the word "and" in item (h), (ii) deleting the period at the end of item
(i) and replacing it with ";", and (iii) inserting the following items (j) and
(k) following item (i):

            "(j) Permitted Swedish Loan Transaction Indebtedness; and

            (k) Hedging Obligations by Borrower in an aggregate amount
outstanding at any one time not to exceed $5,000,000."

      (f) Section 7.20(a)(i) of the Loan Agreement is hereby amended and
restated in its entirety as follows:

                  "(i) "MINIMUM EBITDA. EBITDA of Parent, measured on the fiscal
            period set forth below, of not less than the required amount set
            forth in the following table for the applicable period set forth
            opposite thereto:

<TABLE>
<CAPTION>
          Applicable Amount                    Applicable Period
          -----------------                    -----------------
<S>                                        <C>
              $1,870,000                    For the 3 month period
                                             ending June 30, 2001

              $6,885,000                    For the 3 month period
                                           ending September 30, 2001

              $(556,000)                    For the one month period ending
                                            October 31, 2001

              $3,524,000                   For the two month period
                                           ending November 30, 2001

             $13,940,000                    For the 6 month period
                                           ending December 31, 2001

             $17,765,000                    For the 9 month period
                                             ending March 31, 2002

             $22,610,000                    For the 12 month period
                                             ending June 30, 2002

             $24,310,000                    For the 12 month period
                                           ending September 30, 2002
</TABLE>


                                       3
<PAGE>

<TABLE>
<CAPTION>
          Applicable Amount                    Applicable Period
          -----------------                    -----------------
<S>                                        <C>
             $22,850,000                    For the 12 month period
                                           ending December 31, 2002

             $27,115,000                    For the 12 month period
                                             ending March 31, 2003

             $28,390,000                    For the 12 month period
                                             ending June 30, 2003

             $29,835,000                    For the 12 month period
                                           ending September 30, 2003

             $31,365,000                    For the 12 month period
                                           ending December 31, 2003"
</TABLE>

3. OTHER AGREEMENTS; CONSENT. Subject to the satisfaction of each of the
conditions listed in Section 4, the Lender Group hereby consents to the
consummation of the Designated Transactions so long as (a) the Designated
Transactions occur on or before January 15, 2002; and (b) 100% of the proceeds
of each of the Designated Transactions are paid to Agent for application in
accordance with the terms of the Loan Agreement.

4. CONDITIONS PRECEDENT TO THIS AMENDMENT. The satisfaction of each of the
following shall constitute conditions precedent to the effectiveness of this
Amendment and each and every provision hereof:

      (a) The representations and warranties in the Loan Agreement and the other
Loan Documents shall be true and correct in all respects on and as of the date
hereof, as though made on such date (except to the extent that such
representations and warranties relate solely to an earlier date);

      (b) Agent shall have received the reaffirmation and consent of each
Guarantor, attached hereto as Exhibit A, duly executed and delivered by an
authorized official of Guarantor;

      (c) No Default or Event of Default shall have occurred and be continuing
on the date hereof or as of the date of the effectiveness of this Amendment; and


                                       4
<PAGE>

      (d) No injunction, writ, restraining order, or other order of any nature
prohibiting, directly or indirectly, the consummation of the transactions
contemplated herein shall have been issued and remain in force by any
Governmental Authority against Borrower, Guarantors, or the Lender Group.

5. CONSTRUCTION. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN
ACCORDANCE WITH, THE LAW OF THE STATE OF CALIFORNIA APPLICABLE TO CONTRACTS MADE
AND TO BE PERFORMED IN THE STATE OF CALIFORNIA.

6. ENTIRE AMENDMENT; EFFECT OF AMENDMENT. This Amendment, and terms and
provisions hereof, constitute the entire agreement among the parties pertaining
to the subject matter hereof and supersedes any and all prior or contemporaneous
amendments relating to the subject matter hereof. Except for the amendments to
the Loan Agreement expressly set forth in Section 2 hereof, the Loan Agreement
and other Loan Documents shall remain unchanged and in full force and effect.
Except as expressly set forth herein, the execution, delivery, and performance
of this Amendment shall not operate as a waiver of any right, power, or remedy
of the Lender Group as in effect prior to the date hereof. The agreements set
forth herein are limited to the specifics hereof, shall not apply with respect
to any facts or occurrences other than those on which the same are based, shall
not excuse future non-compliance with the Loan Agreement, and shall not operate
as a consent to any further or other matter, under the Loan Documents. To the
extent any terms or provisions of this Amendment conflict with those of the Loan
Agreement or other Loan Documents, the terms and provisions of this Amendment
shall control. This Amendment is a Loan Document.

7. COUNTERPARTS; TELEFACSIMILE EXECUTION. This Amendment may be executed in any
number of counterparts, all of which taken together shall constitute one and the
same instrument and any of the parties hereto may execute this Amendment by
signing any such counterpart. Delivery of an executed counterpart of this
Amendment by telefacsimile shall be equally as effective as delivery of an
original executed counterpart of this Amendment. Any party delivering an
executed counterpart of this Amendment by telefacsimile also shall deliver an
original executed counterpart of this Amendment, but the failure to deliver an
original executed counterpart shall not affect the validity, enforceability, and
binding effect of this Amendment.

8. MISCELLANEOUS.

      (a) Upon the effectiveness of this Amendment, each reference in the Loan
Agreement to "this Agreement", "hereunder", "herein", "hereof" or words of like
import referring to the Loan Agreement shall mean and refer to the Loan
Agreement as amended by this Amendment.

      (b) Upon the effectiveness of this Amendment, each reference in the Loan
Documents to the "Loan Agreement", "thereunder", "therein", "thereof" or words
of like


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<PAGE>

import referring to the Loan Agreement shall mean and refer to the Loan
Agreement as amended by this Amendment.

                            [Signature page follows.]


                                       6
<PAGE>

            IN WITNESS WHEREOF, the parties have caused this Amendment to be
executed and delivered as of the date first written above.

HYPERCOM CORPORATION,                HYPERCOM EMEA, INC.,
a Delaware corporation               fka Hypercom Europe Limited, Inc.,
                                     an Arizona corporation

By: /s/ C.S. Alexander               By: /s/ C.S. Alexander
    _____________________________        _____________________________
Name:  C.S. Alexander                Name:  C.S. Alexander
      ___________________________          ___________________________
Title: President and CEO             Title: President
       __________________________           __________________________


HYPERCOM U.S.A., INC.,               HYPERCOM MANUFACTURING RESOURCES, INC.,
a Delaware corporation               an Arizona corporation

By: /s/ C.S. Alexander               By: /s/ C.S. Alexander
    _____________________________        ______________________________
Name:  C.S. Alexander                Name:  C.S. Alexander
      ___________________________          ____________________________
Title: President                     Title: Chairman
       __________________________           ___________________________


HYPERCOM HORIZON, INC.,              EPICNETZ, INC.,
a Missouri corporation               a Nevada corporation

By: /s/ C.S. Alexander               By: /s/ C.S. Alexander
    _____________________________        _____________________________
Name:  C.S. Alexander                Name:  C.S. Alexander
      ___________________________          ___________________________
Title: Chairman                      Title: President
       __________________________           __________________________


HYPERCOM LATINO AMERICA, INC.,
an Arizona corporation

By: /s/ C.S. Alexander
    _____________________________
Name:  C.S. Alexander
      ___________________________
Title: Chairman
       __________________________


FOOTHILL CAPITAL CORPORATION,
a California corporation, as Agent and
as a Lender

By: /s/ John Nocita
    _____________________________
Name:  John Nocita
      ___________________________
Title: Vice President
       __________________________


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<PAGE>

                                    EXHIBIT A

                            REAFFIRMATION AND CONSENT

            All capitalized terms used herein but not otherwise defined herein
shall have the meanings ascribed to them in that certain Loan and Security
Agreement by and among the lenders identified on the signature pages thereof
(such lenders, together with their respective successors and assigns, are
referred to hereinafter each individually as a "Lender" and collectively as the
"Lenders"), FOOTHILL CAPITAL CORPORATION, a California corporation, as the
arranger and administrative agent for the Lenders ("Agent"), and, on the other
hand, HYPERCOM CORPORATION, a Delaware corporation ("Parent"), and each of
Parent's Subsidiaries identified on the signature pages thereof (such
Subsidiaries are referred to hereinafter each individually as a "Borrower", and
individually and collectively, jointly and severally, as the "Borrowers"), dated
as of July 31, 2001, as amended by Amendment Number One to Loan and Security
Agreement dated as of October 3, 2001, by Amendment Number Two to Loan and
Security Agreement dated as of November 13, 2001, by Amendment Number Three to
Loan and Security Agreement dated as of February 13, 2002, by Amendment Number
Four to Loan and Security Agreement dated as of June 24, 2002, and by Amendment
Number Five to Loan and Security Agreement dated as of December 23, 2002 (as the
same may be further amended, restated, supplemented, or otherwise modified from
time to time, the "Loan Agreement"), or in Amendment Number Five to Loan and
Security Agreement dated as of December 23, 2002 (the "Amendment"), among
Parent, the Borrowers and the Lender Group. The undersigned hereby (a) represent
and warrant to the Lender Group that the execution, delivery, and performance of
this Reaffirmation and Consent are within its powers, have been duly authorized
by all necessary action, and are not in contravention of any law, rule, or
regulation, or any order, judgment, decree, writ, injunction, or award of any
arbitrator, court, or governmental authority, or of the terms of its charter or
bylaws, or of any contract or undertaking to which it is a party or by which any
of its properties may be bound or affected; (b) consents to the transactions
contemplated by the Amendment and the execution and delivery thereof; (c)
acknowledges and reaffirms its obligations owing to the Lender Group under the
Guaranty and any other Loan Documents to which it is a party; and (d) agrees
that each of the Loan Documents to which it is a party is and shall remain in
full force and effect. Although the undersigned has been informed of the matters
set forth herein and has acknowledged and agreed to same, it understands that
the Lender Group has no obligations to inform it of such matters in the future
or to seek its acknowledgment or agreement to future amendments, and nothing
herein shall create such a duty. Delivery of an executed counterpart of this
Reaffirmation and Consent by telefacsimile shall be equally as effective as
delivery of an original executed counterpart of this Reaffirmation and Consent.
Any party delivering an executed counterpart of this Reaffirmation and Consent
by telefacsimile also shall deliver an original executed counterpart of this
Reaffirmation and Consent but the failure to deliver an original executed
counterpart shall not affect the validity, enforceability, and binding effect of
this Reaffirmation and Consent. This Reaffirmation and Consent shall be governed
by the laws of the State of California.

<PAGE>

      IN WITNESS WHEREOF, the undersigned have each caused this Reaffirmation
and Consent to be executed as of the date of the Amendment.

HYPERCOM CORPORATION,                   HYPERCOM FINANCIAL TERMINALS AB
a Delaware corporation                  (SWEDEN), an organization organized
                                        under the laws of Sweden

By: /s/ C.S. Alexander                  By: /s/ C.S. Alexander
    ______________________________          ______________________________
Name:  C.S. Alexander                   Name:  C.S. Alexander
      ____________________________            ____________________________
Title: President and CEO                Title: Chair
       ___________________________             ___________________________

HYPERCOM DO BRASIL INDUSTRIA E
COMERCIO LIMITADA (BRAZIL), an
organization organized under the laws
of Brazil

    By: Hypercom U.S.A., Inc.,
           its shareholder

    By: /s/ C.S. Alexander
        ____________________________
    Name:  C.S. Alexander
          __________________________
    Title: President
          __________________________


    By: Hypercom Latino America, Inc.,
           its shareholder


    By: /s/ C.S. Alexander
        ____________________________
    Name:  C.S. Alexander
          __________________________
    Title: Chairman
          __________________________