Virtual keyboards that appear on tablets PCs using touch screens, such as the Samsung Galaxy Tab and the Apple iPad, can be a little tricky to use. They can be frustrating for people who are used to typing on physical keyboards, resting their fingers on keys like what people usually do. This results in keying in unwanted letters. And since the touch screen’s keypad...

Here’s one for those who whine that “the iPad doesn’t have a proper keyboard app” or “the Pianist app works wonders but it isn’t enough for me.” Ion Audio’s Piano Apprentice is an external keyboard that can be used with your iPad, iPod Touch or iPhone, only instead of having QWERTY, it has CDEFGAB and all the sharps in between. Ion...