As cell phones and other portable handheld devices continue to add features, design trade-offs are constantly evolving. Popular features such as text messaging and web browsing demand more data entry, ...

There’s an easier, infinitely less annoying way to edit your texts; by using your iPhone keyboard as a trackpad. Here's how to do it.

This tutorial describes how low cost, low power CPLDs can be used to expand a typical handset DTMF keypad into a QWERTY keypad. As cell phones and other portable handheld devices continue to add ...

It takes some getting used to, but if you dislike typing on an iPhone, you can slide your finger across the keyboard to enter text instead.

In a test sentence containing 160 letters, a standard mobile phone keypad required 308 presses whereas the MobileQwerty interface only required 212 presses.