[parsimo2010]

Practically every modern receiver works fine under 700 mph(edit: apparently the COCOM limits are approximately 1,200 mph). But the data can be tampered with, and if you’re not clever about how you do it there will be some discrepancies. Presumably a company validating their data would be a relatively trustworthy way to catch the tampering. There are a couple people on Strava (a fitness app) that doctor their GPS data to shave a few seconds of their times and take the top spot on the leaderboard. Sometimes they get caught because of the discrepancies.

This is really about Shelby getting caught with a doctored video and lying about a fake record but the author is too nice to call them out on it.