EXHIBIT 5.3

[Fiserv Letterhead]

September 14, 2010

Fiserv, Inc.

Information Technology, Inc.

ITI of Nebraska, Inc.

255 Fiserv Drive

Brookfield, Wisconsin 53045

Ladies and Gentlemen:

I am an Associate General Counsel of Fiserv, Inc., a Wisconsin corporation (the “Company”), and act as Nebraska counsel for the Company and for its subsidiaries, Information Technology, Inc., a Nebraska corporation, and ITI of Nebraska, Inc., a Nebraska corporation (together, the “Nebraska Guarantors”), and in such capacities I am providing this opinion to you in connection with the preparation of a Registration Statement on Form S-3 (the “Registration Statement”), including the prospectus constituting a part thereof (the “Prospectus”), to be filed with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”), relating to the issuance and sale by the Company from time to time of an indeterminate amount of, among other securities, debt securities of the Company (the “Debt Securities”), which may be fully and unconditionally guaranteed (the “Guarantees”) by certain of the Company’s subsidiaries, including the Nebraska Guarantors. The Prospectus provides that it will be supplemented in the future by one or more supplements to such Prospectus (each, a “Prospectus Supplement”).

As Nebraska counsel to the Company in connection with the proposed issuance of the Guarantees, I have examined: (i) the Registration Statement, including the Prospectus; (ii) articles of incorporation and by-laws of each of the Nebraska Guarantors each as amended to date; (iii) the Indenture, dated November 20, 2007, among the Company, the guarantors listed therein and U.S. Bank National Association, as trustee, for the issuance of Debt Securities and the Guarantees (the “Indenture”); and (iv) such other proceedings, documents and records as I have deemed necessary to enable me to render this opinion.

In my examination of the above-referenced documents, I have assumed the genuineness of all signatures, the authenticity of all documents, certificates and instruments submitted to me as originals and the conformity with the originals of all documents submitted to me as copies. I have also assumed that (i) the Registration Statement, and any amendments thereto (including post-effective amendments), will comply with all applicable laws; (ii) a Prospectus Supplement, if required, will have been prepared and filed with the SEC describing the Debt Securities and Guarantees offered thereby; (iii) all Debt Securities and Guarantees will be issued and sold in compliance with applicable federal and state securities laws and in the manner stated in the Registration Statement and any applicable Prospectus Supplement; (iv) any supplemental indenture to the Indenture setting forth the terms of a series of Debt Securities and Guarantees to be issued under the Indenture, will each be duly authorized, executed and delivered by the parties thereto in substantially the form reviewed by me; and (v) a definitive purchase, underwriting or similar agreement with respect to any Debt Securities and Guarantees offered will have been duly authorized and validly executed and delivered by the Company and the other parties thereto.

Based upon and subject to the foregoing, I am of the opinion that:

1. All requisite action necessary to make any Guarantees issued by the Nebraska Guarantors valid, legal and binding obligations of the Nebraska Guarantors, subject to (i) bankruptcy, insolvency, reorganization, fraudulent transfer, fraudulent conveyance, moratorium and other similar laws of general

application affecting the rights and remedies of creditors and (ii) general principles of equity, regardless of whether applied in a proceeding in equity or at law, shall have been taken when:

a. The Company’s Board of Directors, or a committee thereof or one or more officers of the Company, in each case duly authorized by the Board of Directors, shall have taken action to establish the terms of Debt Securities and to authorize the issuance and sale of such Debt Securities;

b. The Board of Directors of each Nebraska Guarantor, or a committee thereof or one or more officers of such Nebraska Guarantor, in each case duly authorized by the Board of Directors, shall have taken action to establish the terms of the Guarantees and to authorize the issuance of such Guarantees;

c. The terms of such Debt Securities, and of their issuance and sale, and Guarantees, and their issuance, have been established in conformity with the applicable Indenture so as not to violate any applicable law or result in a default under or breach of any agreement or instrument binding upon the Company or any Nebraska Guarantor and so as to comply with any requirements or restrictions imposed by any court or governmental entity having jurisdiction over the Company or any Nebraska Guarantor;

d. Such Debt Securities and Guarantees, shall have been duly executed, authenticated and delivered in accordance with the terms and provisions of the applicable Indenture; and

e. Such Debt Securities shall have been issued and sold, and such Guarantees shall have been issued, for the consideration contemplated by, and otherwise in conformity with, the Registration Statement, as supplemented by a Prospectus Supplement with respect to such issuance and sale, and the acts, proceedings and documents referred to above.

I am qualified to practice law in the State of Nebraska and I do not purport to be an expert on the law other than that of the State of Nebraska. I express no opinion with respect to the laws of any jurisdiction other than the laws of the State of Nebraska. The opinions expressed in this letter are given as of the date hereof, and I do not undertake to advise you of any events occurring subsequent to the date hereof that might affect any of the matters covered by any of such opinions.

I hereby consent to the reference to myself under the caption “Legal Matters” in the Prospectus which is filed as part of the Registration Statement, and to the filing of this opinion as an exhibit to the Registration Statement. In giving this consent, I do not admit that I am an “expert” within the meaning of Section 11 of the Securities Act or within the category of persons whose consent is required by Section 7 of the Securities Act.

Very truly yours,

/s/ Brian K. Ridenour

Brian K. Ridenour

In his capacity as Associate General Counsel of Fiserv, Inc., acting as Nebraska counsel to Fiserv, Inc., Information Technology, Inc. and ITI of Nebraska, Inc.