IDO Security (IDOI) 8-K/A Changes in Registrant.s Certifying Accountant

Exhibit 16.1

A PARTNERSHIP OF INCORPORATED PROFESSIONALS	AmisanoHanson
	CharteredAccountants

March 15, 2007

Office of the Chief Accountant

Securities and Exchange Commission

450 Fifth Street, N.W.

Washington, D.C. 20549

U.S.A.

Dear Sirs:

Re: The Medical Exchange Inc. (the “Company”)

We were the auditors of the Company and on October 12, 2006 we reported on its financial statements for the years ended June 30, 2006 and 2005 and on February 14, 2007 we reported on its financial statements for the six month period ended December 31, 2006.

Further to the request of the board of directors of the Company and pursuant to Regulation SB Item 304, we wish to advise that, based on our knowledge of information at this time, we agree with the information contained in the Company’s Form 8-K/A to which this letter is being filed as an exhibit.

Yours truly yours,

/s/ Amisano Hanson

AMISANO HANSON

750 WEST PENDER STREET, SUITE 604	TELEPHONE:    604-689-0188
VANCOUVER CANADA	FACSIMILE:    604-689-9773
V6C 2T7	E-MAIL:    amishan@telus.net