Why do you even need the IMEI?

The International Mobile Equipment Identity, or IMEI, is a special number that is tied to every unique mobile phone. It is used whenever the phone is registered on a mobile network. It can also be used to blacklist a phone off of the network, which happens, for example, when it is reported as stolen. Blacklisting… Continue reading


Apps sending location, secretly.

One of the things we noticed when doing our large-scale study of children’s games was that way more apps were accessing location data than were seen actually sending it. In some ways this makes sense—COPPA quite explicitly forbids sending location data without verifiable parental consent, something that our testing framework did not provide. Nevertheless, since… Continue reading