1. The NSA using a single FISA secret court search warrant to collect all internet and telephone traffic got a lot of press. Send your thank you notes to Snowden c/o Russian airport...
2. Less press has been given to the USPS collecting and saving the outside writing on ALL letters and packages mailed.
3. But there's more: Police are using digital cameras and scanners to photograph many millions of license plates on cars all over the roads, highways, and parking lots (not to mention in your driveway) all over the US. And... they are saving all those data.
You can't hide from cops with license-plate scanners