Let's say I make frequent visits to mosques, and there's a government unfriendly to Muslims in power, as one of many hypothetical scenarios where this could be a real problem.
Looking at data storage rates and 'digital permanence': we should be equally concerned that such a government may one day be in power and retroactively use that data against you.
Sure but all your activities and everyone else's activity would be tracked. Assuming rule of law continues to be upheld and we don't devolve into something worse it should be pretty easy to show innocence if needed.
Let's say I visit a church regularly, and someone who later turns out to be a terrorist was often there at the same time. Not surprising, since houses of worship often have predictable schedules of events.
How do I prove I wasn't collaborating with the terrorist?
