In all the discussions about mobile banking — will it be text-based, go through a mobile website, or do 225 million U.S. mobile phones all have to download some sort of an app — there is little discussion on an obvious use case, voice to text.

The only person I've heard talking about this publicly is Richard Crone of Crone Consulting, a fixture on the conference circuit, and the keynoter at SourceMedia's Mobile eCommerce conference in June (see our previous coverage here).

Here's what I want my bank, card company, and credit union to offer (assumes my mobile phone is registered with my bank):

Call my bank's 800 number from my mobile phone, then without touching the keypad, simply say "text me" and hang up (or for multiple account holders, "text me checking," "text me credit card," and so on). Or if background noise is bad or the connection isn't clear, let me press a single number on the first VRU tree that triggers the same text message.

Then, the bank sends me an SMS message with my current and available balance and last ten transactions, or whatever else would fit in the 160 character message. Ideally, I could text back to get more transactions or even make a transfer. But I'll take just the simple one-way message for now.

Would I pay for it? No. But I'm not the core market, since I'm online 24/7. But if I'm a a twenty-something, on the go and managing my account to the last $25 every week, a reasonable fee ($0.25) per message would seem fair. Would it decrease overdraft income? Yep, some. But you'd have a happier customer and potentially some decreased call center expenses.

Zillow Example
While I don't know any banks using this approach, Jott, which is a voice-to-text Web 2.0 company, recently used Zillow's API to offer voice-to-text delivery of home values (see Zillow blog post here). After registering with the sites, users can call Jott, say an address, and receive a text message with the estimated home value of the property. While this is not exactly a mainstream app, it's surely valuable for real estate agents, home buyers, and nosy neighbors.

For more information on this topic read our Mobile Banking & Payments Report.