Invisible Shield screen protector
(I posted this in one of the TomTom One threads but the same question was asked here, so... Note they have protectors for several TomTom models... search both for "tom" and for "tomtom")
First - no, I do NOT work for ShieldZone, I just love their product.
I have been using PDAs since, well, forever - I started with Apple Newton, have had almost ever make of Palm devices since the Palm Personal (and I think one before that). I had Write Right protectors back before Fellow's bought the company. I have bought protectors, made my own from transparency sheets - you name it I have tried them. About a year ago I came across the Invisible Shield and have never looked back - I have them installed on my PSP, Treo, iPod, Nintendo DS, my wifes Palm TX -- in short I drink their Kool-Aid. Anyway, when I (recently) got my TomTom One I picked up Invisble Shield screen protector for it
http://www.shieldzone.com/item_description/TOMTONE.html
While their TomTom One picture is outdated, it fit my new style TT1 absolutely perfectly. They are SUPER easy to install, reasonably priced (free shipping). The key to installation is to be liberal with their "spray", place it quickly, get it adjusted, then use the squeegee to get the bubbles out. They will NOT scratch, ever. Period. Never. Install one and you are set for life. If you manage to scratch or damage it in any way, send it back and they will send a replacement for free. If you cannot get the bubbles out, send it back, they will send a replacement. This is an absolutely fantastic company and product. They are maybe a dollar or two more expensive than the cheapy brands but try it once and you will buy them for every device you own. No need for pics, you wouldn't be able to see it anyway.
If you doubt the quality, watch the videos on their web site - you cannot scratch or damage these things.