Motorola's M-Wallet: mobile payments with a J2ME application

Motorola seems to get into this, with a software solution and a downloadable application:

The M-Wallet service will come in the form of a downloadable application, compatible with not only Motorola handsets, but also handsets from other manufacturers, and even PDA's. Initially, the M-Wallet system will only allow banking transactions such as on line bill payments, funds transfers, and purchases through participating retailers such as airlines.

Also, see the Chicago tribune article on M-Wallet