Is it possible to have a cash code system implemented in banqer?

There use to be an old class banking system that allowed the use of one off codes. These codes would be like using real money. Students would receive class currency with the one off code and then be able to enter the code manually into their banq account to receive the money.Although banqer has some fantastic features, I always feel like I am missing this. It would be wonderful to use when you are outside the classroom and you want to reward someone. It's quick and simple and my students use to love it.

Nicolai Rees