Designing for touchscreensA few things i’ve learned while working on touchscreen interfaces.

Throw away your preconceptions

A touchscreen is not like a usual device.

Don’t rely on your design “habits”.

A touchscreen is not an iPhone.

All touchscreens are not created equal.

Multi-touch, quick response, modern browser, device-specific form elements, predictive keyboard, sound & visual feedback...

Don’t take it (all) for granted.

(or an Android)

but it might not be a desktop either...

Tablets, handheld devices, kiosks, tables...

The touchscreen landscape is still evolving.

Imagine the use cases

What kind of hardware? Which OS? Screen size?

Will the app mostly be used seated, standing, running, on the loo...?

Will the screen always be lighted correctly?

Do i know the type of users?

Dumb it down.

Don’t forget accessibility basics.

Remove any unnecessary or distracting elements.

Use clear call-to-actions.

Use large inputs.

Self-explaining & consistent icons

With no tooltips available, you should not confuse your users.

Use common conventions, pay attention to detail.

Use even more whitespace

Prevent accidental triggers by design.

Provide the user with visual feedback

Did this button register my tap?Is the page loading? Have i selected the right input?

Why does this look like a christmas tree?

Use feedback for actions & use inline validation wisely.

You might have to make some trade-offs

Ex: What happens when CSS3 is not supported?

Think about your lowest common denominator.

Use progressive enhancement

Your app should be usable by everyone. Just make it even better for those with the right technology.

Use conventions when they apply.

but don’t hesitate to throw them away when they’re not relevant or mess with your users.

Questions?

Thank you.

http://www.gregone.com

http://www.biggerthanpixels.com

@gregone

More on the subject...Luke Wroblewski - Touch gesture reference guide

Lukas Mathis - Detail in interface design

John Hicks - Icons for interaction