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Why would any developer or product manager will choose to hide the OTPs while typing? I noticed this on GST portal of India.

It's difficult to pinpoint the exact reason the GST portal hides OTPs without consulting the developers directly. However, security is the most likely reason. Hiding OTPs prevents shoulder surfing, a common tactic where someone steals your code by lo

That's a new term I learnt. Thank you. But then, why there are numerous websites not hiding it?

Don't know exactly but I think it can also be frustrating to type and confirm. Another reason I think is they might believe users are already aware OTPs are confidential and shouldn't be shared. This can create a simpler interface without sacrifici