Document:

<PAGE>

                                                                   EXHIBIT 10.18

                            SECOND AMENDMENT TO LEASE

         THIS SECOND AMENDMENT TO LEASE (this "Second Amendment") is made and
entered into effective as of December 31, 2003 (the "Effective Date"), by and
between CAZ ENTERPRISES, L.L.C., an Arizona limited liability company
("Landlord"), and MOBILE MINI, INC., a Delaware corporation ("Tenant").
Capitalized terms used in this Second Amendment without definition shall have
the respective meanings ascribed to them in the Lease (as hereinafter defined).

                                    RECITALS:

         WHEREAS, Landlord, as successor-in-interest to Steven G. Bunger, a
married individual dealing with his sole and separate property; Michael J.
Bunger, a married individual dealing with his sole and separate property;
Carolyn A. Clawson, a married individual dealing with her sole and separate
property; Jennifer J. Blackwell, a married individual dealing with her sole and
separate property; and Susan E. Bunger, a single individual and Tenant, as
successor-in-interest to Mobile Mini Storage Systems, a sole proprietorship of
Richard E. Bunger, executed that certain Lease dated January 1, 1994 (the
"Lease"), relating to the Premises known and identified as 3434 East Wood
Street, Phoenix, Arizona (the "Lease"). A copy of the Lease is attached hereto
as Exhibit "A" and by this reference made a part hereof.

         WHEREAS, Tenant desires to provide for the extension of the term of the
Lease, and Landlord has agreed to such provision, subject to the terms and
conditions set forth herein.

                                   AGREEMENTS:

         NOW, THEREFORE, in consideration of the above premises, the mutual
covenants hereinafter expressed, and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the parties agree as
follows:

         1.       Effective Date. The terms and provisions of this Second
Amendment shall be effective as of the Effective Date.

         2.       Term. Section 1.3 of the Lease is hereby amended and restated
in its entirety to read as follows:

                           "2.      TERM: The term of this Lease shall be for 60
                  months, commencing on January 1, 2004 and expiring on December
                  31, 2008.

         3.       Binding Effect This Second Amendment shall inure to the
benefit of and shall be binding upon the parties hereto and their respective
successors and permitted assigns.

         4.       Governing Law. This Second Amendment shall be governed by, and
construed and enforced in accordance with, the laws of the State of Arizona
without regard to its conflicts of laws principles.

<PAGE>

         5.       Effect of Second Amendment. All of the terms, covenants,
conditions and provisions of the Lease are hereby reinstated, ratified, affirmed
and remain in full force and effect, as modified by this Second Amendment.

         6.       Counterpart Execution. This Second Amendment may be executed
in any number of counterparts, each of which shall be deemed an original, and
all of which together shall constitute one and the same instrument.

                 [Remainder of page intentionally left blank.]

                                       2
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Second
Amendment to be executed as of the date First above written.

                                            LANDLORD:

                                            CAZ ENTERPRISES, L.L.C., an Arizona
                                            limited liability company

                                            By:
                                               ---------------------------------

                                            Name: Steven Bunger

                                            Its: Member

                                            TENANT:

                                            MOBILE MINI, INC., a Delaware
                                            corporation

                                            By:
                                               ---------------------------------

                                            Name: Larry Trachtenberg

                                            Its: Chief Financial Officer

             [Signature Page to Second Amendment to Lease Agreement]

                                       3
<PAGE>

                                    EXHIBIT A
                                       to
                            SECOND AMENDMENT TO LEASE

                                      LEASE

                                 (see attached)<PAGE>

                                                                   EXHIBIT 10.19

                            SECOND AMENDMENT TO LEASE

         THIS SECOND AMENDMENT TO LEASE (this "Second Amendment") is made and
entered into effective as of December 31, 2003 (the "Effective Date"), by and
between THREE & TWO ENTERPRISES, L.L.C., an Arizona limited liability company
("Landlord"), and MOBILE MINI, INC., a Delaware corporation ("Tenant").
Capitalized terms used in this Second Amendment without definition shall have
the respective meanings ascribed to them in the Lease (as hereinafter defined).

                                    RECITALS:

         WHEREAS, Landlord, as successor-in-interest to Steven G. Bunger, a
married individual dealing with his sole and separate property; Michael J.
Bunger, a married individual dealing with his sole and separate property;
Carolyn A. Clawson, a married individual dealing with her sole and separate
property; Jennifer J. Blackwell, a married individual dealing with her sole and
separate property; and Susan E. Bunger, a single individual and Tenant, as
successor-in-interest to Mobile Mini Storage Systems, a sole proprietorship of
Richard E. Bunger, executed that certain Lease dated January 1, 1994 (the
"Lease"), relating to the Premises known and identified as 1485 West Glenn,
Tucson, Arizona (the "Lease"). A copy of the Lease is attached hereto as Exhibit
"A" and by this reference made a part hereof.

         WHEREAS, Tenant desires to provide for the extension of the term of the
Lease, and Landlord has agreed to such provision, subject to the terms and
conditions set forth herein.

                                   AGREEMENTS:

         NOW, THEREFORE, in consideration of the above premises, the mutual
covenants hereinafter expressed, and other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the parties agree as
follows:

         1.       Effective Date. The terms and provisions of this Second
Amendment shall be effective as of the Effective Date.

         2.       Term. Section 1.3 of the Lease is hereby amended and restated
in its entirety to read as follows:

                           "2.      TERM: The term of this Lease shall be for 60
                  months, commencing on January 1, 2004 and expiring on December
                  31, 2008.

         3.       Binding Effect This Second Amendment shall inure to the
benefit of and shall be binding upon the parties hereto and their respective
successors and permitted assigns.

         4.       Governing Law. This Second Amendment shall be governed by, and
construed and enforced in accordance with, the laws of the State of Arizona
without regard to its conflicts of laws principles.

<PAGE>

         5.       Effect of Second Amendment. All of the terms, covenants,
conditions and provisions of the Lease are hereby reinstated, ratified, affirmed
and remain in full force and effect, as modified by this Second Amendment.

         6.       Counterpart Execution. This Second Amendment may be executed
in any number of counterparts, each of which shall be deemed an original, and
all of which together shall constitute one and the same instrument.

                  [Remainder of page intentionally left blank.]

                                       2
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Second
Amendment to be executed as of the date First above written.

                                            LANDLORD:

                                            THREE & TWO ENTERPRISES, L.L.C., an
                                            Arizona limited liability company

                                            By:
                                               ---------------------------------

                                            Name: Steven Bunger

                                            Its: Member

                                            TENANT:

                                            MOBILE MINI, INC., a Delaware
                                            corporation

                                            By:
                                               ---------------------------------

                                            Name: Larry Trachtenberg

                                            Its: Chief financial Officer

             [Signature Page to Second Amendment to Lease Agreement]

                                       3
<PAGE>

                                    EXHIBIT A
                                       to
                            SECOND AMENDMENT TO LEASE

                                      LEASE

                                 (see attached)<PAGE>

                                                                     EXHIBIT 4.4

                              SHAREHOLDER AGREEMENT

                  Shareholder Agreement, dated as of December __, 2003 by and
between eFunds Corporation, a Delaware corporation (the "Company"), on the one
hand, and MasterCard International Incorporated, a Delaware corporation
("MasterCard").

                  WHEREAS, MasterCard and the Company have entered into that
certain Alliance Agreement, of even date herewith (the "Alliance Agreement"),
pursuant to which MasterCard and the Company intend to pursue mutually
beneficial business opportunities;

                  WHEREAS, MasterCard may, in its discretion, from time to time
purchase shares of the Company's common stock, par value $.01 per share (the
"Common Stock");

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

                                    ARTICLE 1

                   Definitions; Representations and Warranties

                  SECTION 1.1 Definitions. Unless otherwise specified all
references to "days" shall be deemed to be references to calendar days. For
purposes of this Agreement, the following terms shall have the following
meanings:

                  "Affiliate" of MasterCard shall have the meaning set forth in
Rule 12b-2 of the Exchange Act as in effect on the date of this Agreement, but
shall not include any investor in or limited partner or member of MasterCard who
(i) does not otherwise have voting or dispositive power over any securities
Beneficially Owned by MasterCard or (ii) does not control and is not controlled
by MasterCard. It is expressly intended that any Person who now or hereafter
controls or is controlled by MasterCard or who otherwise has voting or
dispositive power over any securities Beneficially Owned by MasterCard shall be
deemed to be an Affiliate of MasterCard for purposes of this Agreement.

                   "Beneficial Ownership" by a Person of any securities shall be
determined in accordance with the term "beneficial ownership" as defined in Rule
13d-3 under the

<PAGE>

Exchange Act as in effect on the date of this Agreement and, in addition,
"beneficial ownership" shall include securities which such Person has the right
to acquire (irrespective of whether such right is exercisable immediately or
only after the passage of time, including the passage of time in excess of sixty
(60) days) pursuant to any agreement, arrangement or understanding or upon the
exercise of conversion rights, exchange rights, warrants or options, or
otherwise. For purposes of this Agreement, MasterCard shall be deemed to
beneficially own any Voting Securities beneficially owned by its Affiliates or
any Group of which MasterCard or any such Affiliate is a member.

                  "Board of Directors" shall mean the Board of Directors of the
Company.

                  "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended.

                  "Group" shall mean a "group" as such term is used in Section
13(d)(3) of the Exchange Act as in effect on the date of this Agreement.

                  "Laws" shall mean all applicable foreign, federal, state and
local laws, statutes, rules, regulations, codes and ordinances.

                  "MasterCard Designee" shall mean a person designated for
election to the Board of Directors by MasterCard as provided in Section 2.1.

                   "Person" shall mean any individual, Group, corporation,
general or limited partnership, limited liability company, governmental entity,
joint venture, estate, trust, association, organization or other entity of any
kind or nature.

                   "Total Voting Power" shall mean the total combined Voting
Power of all the Voting Securities then outstanding.

                  "Voting Power" shall mean, as of the date of determination,
voting power in the general election of directors of the Company and shall be
calculated for each Voting Security by reference to the maximum number of votes
such Voting Security is or would be entitled to cast in the general election of
directors, without giving effect to any Voting Securities issuable upon the
exercise or conversion of any outstanding securities (such as an option) that
are not themselves Voting Securities. There shall not be included in calculating
Voting Power any votes which a Person shall have upon and by reason of the
non-payment of dividends on preferred shares in accordance with the terms of
such preferred shares.

<PAGE>

                  "Voting Securities" shall mean any securities entitled to vote
generally in the election of directors of the Company.

                  SECTION 1.2. Representations and Warranties of the Company.
The Company represents and warrants to MasterCard as follows:

                  (a)      The execution, delivery and performance by the
Company of this Agreement and the consummation by the Company of the
transactions contemplated hereby are within its corporate powers and have been
duly authorized by all necessary corporate action on its part. This Agreement
constitutes a legal, valid and binding agreement of the Company enforceable
against the Company in accordance with its terms, subject, as to enforcement, to
bankruptcy, and insolvency, fraudulent transfer reorganization, moratorium and
similar laws of general applicability relating to or affecting creditor's rights
and to general equity principles.

                  (b)      The execution, delivery and performance of this
Agreement by the Company does not and will not (i) contravene or conflict with
or constitute a default under the Company's Certificate of Incorporation or
Bylaws, (ii) contravene or conflict with or constitute a default under any
agreement to which the Company is a party or is bound, or result in a breach of
or default under any instrument or agreement to which the Company is a party or
is bound, which violation, breach or default could reasonably be expected to
have a material adverse effect on the Company's business taken as a whole or the
Company's ability to consummate the transactions contemplated by this Agreement
(a "Material Adverse Effect"), (iii) violate any judgment, order, injunction,
decree or award against or binding upon the Company as of the date of this
Agreement, the violation of which, individually or in the aggregate, could
reasonably be expected to have a Material Adverse Effect, (iv) violate any Law
relating to the Company, the violation of which, individually or in the
aggregate, could reasonably be expected to have a Material Adverse Effect or (v)
constitute a "change of control," or result in the acceleration of rights, under
any material debt instrument to which the Company is a party.

                  (c)      As of the date of this Agreement, there is no action,
suit or proceeding pending or, to the knowledge of the Company, threatened
against the Company that relates to this Agreement or any of the transactions
contemplated hereby.

                  SECTION 1.3. Representations and Warranties of MasterCard.
MasterCard represents and warrants to the Company as follows:

                  (a)      The execution, delivery and performance by MasterCard
of this Agreement and the consummation by MasterCard of the transactions
contemplated by this Agreement are within its powers and have been duly
authorized by all necessary

<PAGE>

action on its part. This Agreement constitutes a legal, valid and binding
agreement of MasterCard enforceable against MasterCard in accordance with its
terms, subject, as to enforcement, to bankruptcy, and insolvency, fraudulent
transfer, reorganization, moratorium and similar laws of general applicability
relating to or affecting creditor's rights and to general equity principles.

                  (b)      The execution, delivery and performance of this
Agreement by MasterCard does not and will not contravene or conflict with or
constitute a default under MasterCard's governing documents.

                  (c)      As of the date of this Agreement, MasterCard does not
Beneficially Own any Voting Securities.

                  (d)      MasterCard acknowledges and agrees that it is aware
that the Company has adopted a Stockholder Rights Plan and is aware of the terms
and conditions of such Plan.

                                    ARTICLE 2

                        Board Representation and Notices

                  SECTION 2.1.  Board Representation.

                  (a)      The "Shareholder Designee Period" shall commence on
the date, if any, (the "Acquisition Date") that MasterCard and its Affiliates
Beneficially Own Voting Securities having Voting Power in excess of 10% of the
Total Voting Power (the "Representation Threshold") and shall end on the earlier
to occur of (A) the date following the Acquisition Date that MasterCard and its
Affiliates cease to Beneficially Own Voting Securities having Voting Power in
excess of the Representation Threshold and (B) the date of any termination of
the Alliance Agreement. Notwithstanding any other provision hereof, nothing in
this Agreement shall obligate MasterCard to purchase any of the Company's Voting
Securities.

                  (b)      Promptly following a request therefore from
MasterCard given after the Acquisition Date, the Board of Directors will
increase the size of the Board of Directors by one director in accordance with
Article VI of the Company's certificate of incorporation (the "Charter") and
Section 3.16 (e) of the Company's Bylaws and fill the vacancy created by such
increase by electing in accordance with Article VI of the Charter an individual
(the "Shareholder Designee") designated by MasterCard who meets the requirements
of Section 2.1(d). At all times during the Shareholder Designee Period, the
Board shall, subject to Section 2.1(d), nominate the Shareholder Designee for
election to the Board of Directors and include the Shareholder Designee on the
slate of nominees

<PAGE>

recommended by the Board of Directors to the Company's shareholders for election
as directors at each meeting of the shareholders of the Company at which
directors in the class of directors of which the Shareholder Designee is a
member are to be elected. If any Shareholder Designee shall cease to serve on
the Board of Directors during the Shareholder Designee Period (whether by death,
retirement, disqualification, removal from office or other cause), the Board of
Directors shall t, subject to Section 2.1(d), appoint an individual designated
by MasterCard to fill the vacancy created thereby.

                  Notwithstanding the foregoing, the Board of Directors shall
have no obligation to support the nomination, recommendation or election of any
Shareholder Designee pursuant to this Section 2.1(b) or any other obligation
under this Section 2.1 if MasterCard is in breach of any material provision of
this Agreement or the Alliance Agreement.

                  (c)      Concurrently with his or her election to the Board of
Directors, the Shareholder Designee shall submit a resignation from the Board
that shall automatically become effective upon the expiration of the Shareholder
Designee Period.

                  (d)      Notwithstanding the provisions of this Section 2.1,
MasterCard shall not be entitled to designate a given individual for election to
the Board of Directors in the event that (i) the Company receives an opinion of
outside counsel that the proposed Shareholder Designee would not be qualified
under any applicable law, rule or regulation to serve as a director of the
Company, (ii) the proposed Shareholder Designee has been involved in any of the
events enumerated in Item 2(d) or (e) of Schedule 13D or such individual is
currently the target of an investigation by any governmental authority or agency
relating to felonious criminal activity or is subject to any order, decree, or
judgment of any court or agency prohibiting him or her from serving as a
director of any public company or providing investment or financial advisory
services or (iii) the members of the Board of Directors shall conclude in good
faith, after consulting with counsel, that their fiduciary obligations prevent
them from supporting the election of a proposed Shareholder Designee. In any
such event, MasterCard shall withdraw the designation of such proposed
Shareholder Designee and designate a replacement therefor (which replacement
Shareholder Designee shall also be subject to the requirements of this Section).
The Company shall use its reasonable best efforts to promptly notify MasterCard
of any objection to a proposed Shareholder Designee.

                  (e)      Each Shareholder Designee serving on the Board of
Directors shall be entitled to all compensation and stock incentives granted to
directors who are not employees of the Company on the same terms provided to
other similarly situated such directors.

<PAGE>

                  (f)      If, during the Shareholder Designee Period, the Board
of Directors shall fail to elect or nominate for election to the Board of
Directors any Shareholder Designee who satisfies the requirements for
designation to the Board of Directors set forth in Section 2.1(d), then
MasterCard may upon 30 days notice to the Company terminate the Alliance
Agreement if such failure is not cured within such 30 day period.

                  (g)      In the event an officer or director of the Company
(other than the Shareholder Designee) should become the Beneficial Owner of
Voting Securities, having Voting Power equal to or greater than 5% of the Total
Voting Power, the Company shall use reasonable good faith efforts to cause each
such person to execute an agreement, in form and substance reasonably acceptable
to MasterCard, whereby such person agrees to vote their Voting Securities in
favor of the election of the Shareholder Designee nominated by the Board of
Directors at any meeting of the shareholders of the Company at which directors
in the class of directors of which the Shareholder Designee is a member are to
be elected.

                  SECTION 2.2. Notices.

                  (a)      Not later than the tenth day following the end of any
calendar month during the Shareholder Designee Period in which one or more
acquisitions or dispositions of Voting Securities by MasterCard or any of its
Affiliates shall have occurred, MasterCard shall give written notice to the
Company of all such transactions unless any such transaction has been reflected
in a public filing that was delivered to the Company on or in advance of the
date upon which notice thereof under this Section 2.2(a) would have been due.
Such notice shall state the date upon which each such acquisition or disposition
was effected, the number and type of Voting Securities involved in each such
transaction, the means by which each such transaction was effected and, if
known, the identity of the Person acquiring or disposing of the Voting
Securities.

                  (b)      Upon becoming aware of circumstances that will
require it or its Affiliates to become subject to Rule 13d-1(a) under the
Exchange Act and to file a statement on Schedule 13D, MasterCard will provide
the Company with a written notification of its intention to file such a
statement. Such notice will contain a brief description of the circumstances
mandating such requirements. MasterCard will provide the Company with a
reasonable opportunity to review and comment upon the contents of any such
Schedule prior to its filing with the Securities and Exchange Commission (the
"Commission").

                  (c)      If MasterCard or its Affiliates should determine to
proceed with or propose any plan or proposal regarding the Company which would
be required to be reported pursuant to Item 4 of Schedule 13D (regardless of
whether MasterCard is

<PAGE>

currently subject to the reporting requirements of that form), MasterCard will
immediately provide the Company with a written notification of such intention.
Such notification will contain a brief description of the plan or proposal and
the means by which MasterCard intends to pursue the further evaluation or
implementation of the same. The provisions of this Section 2.2(c) shall not
apply to acquisitions or dispositions of Voting Securities that MasterCard
intends to report pursuant to Section 2.2(a) of this Agreement. If MasterCard is
required to file or amend any Schedule 13D due to the existence of the plan or
proposal, MasterCard will provide the Company with a reasonable opportunity to
review and comment upon the contents of such filing or amendment prior to its
filing with the Commission.

                  SECTION 2.3. Modification Upon Subsequent Agreement. If (a)
the Company enters into any agreement, understanding or arrangement with any
other Person or Group (each a "Future Major Investor") relating to the Company's
obligation, whether absolute, contingent, current or future, to support or cause
the nomination of one or more individuals to the Board of Directors at the
request of the Future Major Investor and (b) such agreement, understanding or
arrangement contains any terms with respect to the matters covered by this
Article 2 that are more favorable to the Future Major Investor than those
provided to MasterCard hereunder, then this Article 2 shall be automatically
modified to include those more favorable terms, the intention being to thereby
provide MasterCard with rights at least as favorable and obligations no more
burdensome as those given to the Future Major Investor.

                                    ARTICLE 3

                                  Miscellaneous

                  SECTION 3.1. Notices. All notices, requests, demands and other
communications required or permitted hereunder shall be made in writing by
hand-delivery, registered first-class mail, telex, fax or air courier
guaranteeing delivery:

                  (a)      If to the Company, to:
                           eFunds Corporation
                           8501 N. Scottsdale Road
                           Suite 300
                           Scottsdale, Arizona  85253
                           Attn:  Chief Executive Officer
                           Fax:  (480) 629-7601

<PAGE>

or to such other person or address as the Company shall furnish to MasterCard in
writing;

                  (b)      If to MasterCard, to:
                           MasterCard International Incorporated
                           2000 Purchase Street
                           Purchase, New York 10577-2509
                           Attn:  General Counsel
                           Fax:  (914) 249-4262

or to such other person or address as MasterCard shall furnish to the Company in
writing.

                  All such notices, requests, demands and other communications
shall be deemed to have been duly given: at the time of delivery, if personally
delivered; five (5) business days after being deposited in the mail, postage
prepaid, if mailed domestically in the United States (and seven (7) business
days if mailed internationally); when answered back, if telexed; when receipt is
acknowledged, if telecopied; and on the business day for which delivery is
guaranteed, if timely delivered to an air courier guaranteeing such delivery.

                  SECTION 3.2. Enforcement. MasterCard, on the one hand, and the
Company, on the other hand, acknowledge and agree that irreparable injury to the
other party would occur in the event any of the provisions of this Agreement
were not performed in accordance with their specific terms or were otherwise
breached and that such injury would not be adequately compensable in damages. It
is accordingly agreed that, in addition to any other remedies which may be
available at law or in equity, each party hereto shall be entitled to specific
enforcement of, and injunctive relief to prevent any violation of, the terms of
this Agreement. The parties further agree that no bond shall be required as a
condition to the granting of any such relief.

                  SECTION 3.3. Entire Agreement. This Agreement and the Alliance
Agreement constitute the entire agreement and understanding of the parties with
respect to the transactions contemplated hereby. This Agreement may be amended
or terminated only by a written instrument duly executed by the parties or their
respective successors or assigns.

                  SECTION 3.4. Severability. Whenever possible, each provision
or portion of this Agreement will be interpreted in such manner as to be
effective and valid under applicable law, but if any provision or portion of any
provision of this Agreement is held to be invalid, illegal or unenforceable in
any respect under any applicable law, rule or regulation in any jurisdiction,
such invalidity, illegality or unenforceability will not affect any other
provision or portion of any provision in such jurisdiction, and this Agreement
<PAGE>

will be reformed, construed and enforced in such jurisdiction as if such
invalid, illegal or unenforceable provision or portion of any provision shall
have been replaced with a provision which shall, to the maximum extent
permissible under such applicable law, rule or regulation, give effect to the
intention of the parties as expressed in such invalid, illegal or unenforceable
provision.

                  SECTION 3.5. Headings. Descriptive headings contained in the
Agreement are for convenience only and will not control or affect the meaning or
construction of any provision of this Agreement.

                  SECTION 3.6. Counterparts. For the convenience of the parties,
any number of counterparts of this Agreement may be executed by the parties, and
each such executed counterpart will be an original instrument.

                  SECTION 3.7. No Waiver. Any waiver by any party of a breach of
any provision of this Agreement must be in writing and shall not operate as or
be construed to be a waiver of any other breach of such provision or of any
breach of any other provision of this Agreement. The failure of a party to
insist upon strict adherence to any term of this Agreement on one or more
occasions shall not be considered a waiver or deprive that party of the right
thereafter to insist upon strict adherence to that term or any other term of
this Agreement.

                  SECTION 3.8. Successors and Assigns. This Agreement shall be
binding upon and inure to the benefit of the Company and MasterCard, and to
their respective successors and assigns.

                  SECTION 3.9. Governing Law. This Agreement will be governed by
and construed and enforced in accordance with the internal laws of the State of
Delaware, without giving effect to the conflict of laws principles thereof.

                  SECTION 3.10. Further Assurances. From time to time on and
after the date of this Agreement, the Company and MasterCard, as the case may
be, shall deliver or cause to be delivered to the other party hereto such
further documents and instruments and shall do and cause to be done such further
acts as the other parties hereto shall reasonably request to carry out more
effectively the provisions and purposes of this Agreement, to evidence
compliance herewith or to assure that it is protected in acting hereunder.

                  SECTION 3.11. MasterCard Action. The Company shall be entitled
to rely upon any notice, designation, or instruction signed by Chris A. McWilton
or Noah J. Hanft (the "Representatives"), or any successor Representatives
appointed by MasterCard upon notice to the Company, as a notice, designation or
instruction of MasterCard and its

<PAGE>

Affiliates and the Company shall not be liable to MasterCard or its Affiliates
if the Company acts in accordance with and relies upon the same. MasterCard
acknowledges that the Representatives have full power and authority to act on
their behalf of it and its Affiliates.

                  SECTION 3.12 Effective Date. This Agreement shall be effective
as of the "Execution Date" (as such term is defined in the Alliance Agreement);
provided, however, that if the MasterCard Global Board of Directors does not
ratify and approve this Agreement at its next regularly scheduled meeting, this
Agreement shall immediately become wholly null and void as of the date of such
meeting. In such event, neither party shall have any liability or continuing
obligation to the other hereunder nor any obligation to refund to the other any
sums that may have been received by it from the other in contemplation of the
occurrence of the "Effective Date" (as such term is defined in the Alliance
Agreement). Each of the parties acknowledges and agrees that any reliance upon
an understanding inconsistent with the express terms of this Section 3.12 would
be unreasonable.

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed as of the date first referred to above.

                                     eFUNDS CORPORATION

                                     By: /s/ Paul F. Walsh
                                         -------------------------
                                            Name:
                                            Title:

Approved As To Form
Law Department
JAL

                                     MASTERCARD INTERNATIONAL INCORPORATED

                                     By: /s/ Chris McWilton
                                         ---------------------------------------
                                             Name:  Chris McWilton
                                             Title: CEO

                                     MasterCard Law Department
                                     Approved as to Legal Form
                                     Lawyers Initials: TM
                                     Date: 12/08/03

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