When I installed Fedora 4, I always had a hard freeze when accessing the US robotics modem (full V.90 modem in an 8 bit ISA card). And ever since Fedora 2 the serial port mouse never worked out of the box. Other distros did not have those issues.
Show users registering a photo of the city between 3 other photos from other cities. And repeat the process 2 or 3 times. If the user gets 100% success, then he is local.
Show original photos, not photos taken from Internet where people can find where are they from.
And it should be the law: If you use the word `paradigm' without knowing what the dictionary says it means, you go to jail. No exceptions. -- David Jones