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There are two interface interface elements of typical mobile user interfaces that does the heavy lifting. That is the Text Input Field and the List. I thought I'd share with you some of the usability considerations that is going into Text Input Fields at mBricks. The keypad is well suited to number entry, but ill suited to text entry. Entering text on a mobile phone is hard, and people tend to avoid it if they can. The less text input you have, the better. But you can't avoid it all together. Text input fields are suitable for plain text, numbers and passwords. For entering specific data types like date, time, number ranges etc. you should not use a text input field. Instead use Multi-field Input or a selection widget like a Calendar.

My earlier post about the mobile Text Input Field was met with quite a bit of interest. A little surprising perhaps, since it's a somewhat mundane problem area. But understandable, because its so important to get right. So, to complement it, here is an input control for bound numerical data. Multifield The little brother of the text input field is the Multi-field editor. While the Text input field is suitable for general free form text and numbers, it is not ideal for structured data like dates, time, monetary values, number ranges, etc.