[gz]

Can you use the User-Agent string is some intelligent way to guess the screen size instead of asking me to enter it?

Also, might be nice if you had some presets like, say, Macbook, Macbook pro, etc.

[shawndrost]

Maybe the best solution would be to show a scalable picture of some coins, and ask them to hold a coin up to the screen make the image output the real size.

[zach]

I thought of that, but it doesn't internationalize well. A USB plug is probably more universal but a little weird.

[asmosoinio]

For me screen size worked fine. This would be a lot slower than the current functionality, right?

Maybe have such a system as a back up, for fine tuning. Credit card would work for me, I always have some odd card in my wallet with me.