In Germany, the use of cash has become a proxy for concerns about trust, privacy

Re:In Germany, the use of cash has become a proxy for concer... by ryan-c on Friday May 25, 2018 @11:27AM (#17154608)

Tip for US users WRT loyalty cards: Most of these systems allow you to use your phone number rather than having the actual card. Use whatever the local area code is with 867-5309 as the phone number (from a song). I've never had this not work.

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Re:In Germany, the use of cash has become a proxy for concer... by blacksmith_tb on Friday May 25, 2018 @02:07PM (#17156378)

Another popular approach is to exchange loyalty cards occasionally with friends (or strangers!), to scramble the usage data.

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Re:In Germany, the use of cash has become a proxy for concer... by ryan-c on Friday May 25, 2018 @04:26PM (#17157613)

I've done that too. Throw them all in a hat and redistribute them randomly once every couple of months.

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