Of course, not all of us can remember everywhere we've been in the last 2 weeks, so the use of digital footprints helps fill in missing information on COVID-19infected patients’ activities, travel routes and contacts. This is based on such movements like usage of rideshare apps, credit card payments, ATM withdrawls, movements on public transportation, etc. With this information, the government can inform people who were in the vicinity of the patient so that they are aware and can closely monitor their symptoms and practice social distancing.