meerkat14

Wait a minute. How are Kolkatans with (probably) cheap phones getting their hands on coordinates that accurate when phone GPS is usually only good to within ~5m?[1] I assume the postal workers are getting high end equipment?

[1] "GPS-enabled smartphones are typically accurate to within a 4.9 m (16 ft.) radius under open sky" -- https://www.gps.gov/systems/gps/performance/accuracy/