You can. It wasn't so long ago that the only thing you could do with a phone was look up your account balance or call the bank.
Everything's going electronic these days, including old-fashioned checks. Paper checks are increasingly processed as images, and banks are making it easier for everybody to use the technology.
Royal Bank America is the latest bank to try mobile phone cameras for remote check deposit. Instead of taking checks to the bank, you just take a picture and send it online. Right now they're looking for small business clients to help with beta testing.
This should make your life easier if you regularly deposit checks. However, if you write checks it means you have to be more careful. As everyhting becomes electronic, check processing moves faster. Check float is getting harder; you have to be sure you have funds in your account when you write a check or be prepared for a bounced check. Even the smallest of businesses will be able to draft funds from your account quickly.
[via NetBanker]
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The NetBanker guy also has an interesting post on Randolph Brooks FCU and remote deposits which showed 5% of their checking members using the home-scanner-based service. Seems like the growth of remote deposits is pretty slow.