By John Gruber
Kolide by 1Password ensures that if a device isn’t secure, it can’t access your apps.
One example of how UDID device IDs can be de-anonymized. Since this was originally published back in May 2011, OpenFeint has closed the more egregious privacy holes (GPS location, for example), but it still returns information that can be used to identify you. (Via Marco Arment.)
★ Wednesday, 5 September 2012