Here are some ideas:
We really like the styles shown on the following site:
I'd say the logo should look modern, and exciting - in other words sexy.
The logo should have some element of high tech. Maybe instead of modern I should say futuristic. I'd also say consider dark colors offset with areas bright colors. Metals are great ideas.
Someone once said mobile software should have "Eye candy so good you want to lick it." I think our logo should live up to that expectation if possible.
Not required, but an idea, use a reference to something symbolic of touch: finger, fingerprint, hands, fingerprint reader, button, dials, etc.
Another idea, again not required but maybe the logo should look real enough that it could be touched? Or maybe it should seem physical, with depth, and weight to it. But not too complicated.
Something that has potential to be animated, could be exiting as well.
Feel free to experiment. Please don't feel fenced in we just wanted to provide some ideas to start with.
The files we will require are:
Print file format - .ai (CMYK)
Web file format - .jpg and layered .psd (RGB)
It can be only .psd if logo provided is very large. But ideally .ai and .psd files will be provided.