Although I like the name ''Omniwallet'' (which will be called the ''Omni'', heh a few people might get the reference...) as a Marketing professional I would say that Richard is right and made a couple of great suggestions. I vote for E-Wallet.
E-Wallet sounds too generic too me. Might even be in use and / or TM'd.
Anyway, you just need a working title for now. You can brainstorm the final name once the software is nearly ready.