Back in my early days doing iOS, I worked for a travel company. The web team at one point used IBM TeaLeaf (I'm not sure what it does today), which took screens

Back in my early days doing iOS, I worked for a travel company. The web team at one point used IBM TeaLeaf (I'm not sure what it does today), which took screenshots of the web app's web pages and sent them to the company so they could see what appeared on them (with some obfuscation of sensitive fields). It seemed rather sketchy to me, but they did discover that for years, people with odd letters in their names had never been able to book a hotel. Of course, it appeared as an exception in the log file, but no one ever looked...