Touch screen with buttons, drop-downs in touch screen
13 Aug 2010 - 6:16am
3 years ago
This is my first posting here, I’ve enjoyed reading many discussions in the past, so be gentle :)
Nr 1. Right now we are discussing back and fourth the use of buttons in addition to touch screen. I should mention that we do not have strict accessibility requirements, it is not a product for open spaces, where all tactile feedback is important.
I’ve managed to convince my team not to use input buttons for text/digits (like on ordinary telephone, or calculator) in combination with touch screen if we cannot offer qwerty-keyboard. It will drive people mad with slower inputs etc and give a very confusing idea about how we just couldn’t make up our minds and pick touch-screen or no touch screen.
But I’m not too sure about skipping “physical” Main menu/ Back buttons having consumer products in mind. There is a concern about production cost, it costs less to produce just touch screen with no buttons at all.
Does anybody have any experience and can share thoughts about why e.g. Home/Back button is presented on many devices in addition to touch screen?
I can think that it’s a shortcut and helps to determine touch screen discoverability: is in sleeping mode or shut down; it has a clear hatch-escape principle incorporated, if user gets stuck in some dialogues, s/he can easily get back. If we don’t have it, Main menu button should be placed in every dialogue. The same is for Back button. Something else I’ve missed?
Do you have any touch screen UI examples without any physical buttons? I’d very much appreciate it. What’s are the cons except discoverability and more UI work with consistency in every dialogue? :-)
Nr. 2 Another question about drop-downs in touch-screen, Saffer in “Designing gestural interfaces” says that designing drop-downs for touch screens is not always a good idea because of hover limitation. I know that Iphone started with that wheel-menu drop down, but I’ve seen some apps successfully using drop-downs? I couldn't find any rules about that. What do you guys think?