Though it remains to be seen whether money can be made in offering financial services by wireless methods, the chief vendor in the field seems to be enjoying a stint as the most popular kid in the class.

The Canadian software company 724 Solutions Inc., which helps banks offer wireless transactions, has yet to turn a profit, but it has made deals with major financial institutions, including Bank of America Corp., Merrill Lynch & Co., J.P. Morgan Chase & Co., KeyCorp, and Bank of Montreal. In the last quarter, Wachovia Corp. and went live with 724's technology.

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