A user's ability to spend and/or receive funds for payment accounts maintained in an electronic wallet are limited. These limitations include restrictions on where the user is able to spend the funds in a payment account (e.g., at which merchants the funds can be spent, whether the funds can be withdrawn...http://www.google.com.au/patents/US7398250?utm_source=gb-gplus-sharePatent US7398250 - Method and system for restricting the usage of payment accounts
