Not often. The last time I had to do it was four years ago for two projects: financial data derived from real data with consent of the owner for one project for

Not often. The last time I had to do it was four years ago for two projects: financial data derived from real data with consent of the owner for one project for demos (consulting), and fitness tracker data for testing (wrote a sort of simulator that generated data from several mock trackers with different timestamps and payloads).