Simple's phone number entry field
Firstly: please note this is not my phone number.
Simple (previously Bank Simple) has a great signup form for new accounts. For several input fields they use a combination of well-written microcopy, smart validation and input masks. In this example the placeholder text shows a required format. When the field has focus the green "This must be your iPhone…" text appears. The requirement for an iOS device is a little surprising, but after seeing Bill DeRouchey talk last week about their development process, it's to be expected at this point in time (they're strictly in a Friends And Family access only phase). One of the company's principles is "leave old tech behind", and during his talk Bill mentioned they hadn't tested anything on IE as they're concentrating on better browsers. Taking this principle further, I can see why at the moment they'd want to design for the pretty stable platform that is iOS rather than deal with the increasingly splintered mess of Android support. And then there's Blackberrys and lower…
In testing this field, I entered my phone number in several different ways and it accepted each one and then used an input mask to replace my entry so it matched the the format in their original placeholder text.
My only slight gripe with this is the microcopy: I'm not 100% sure what "verify your account" means. Does it means they'll send me a text message when my account set up is complete? Is my phone number a core requirement for an account? Something else?