The advisory came in a series of tweets from the UIDAI after the Telecom Regulatory Authority of India (TRAI) Chairman R.S. Sharma last week threw a challenge and tweeted his 12-digit unique Aadhaar number, asking if it had made him vulnerable to any security risk. Some of his personal details were reportedly hacked and leaked thereafter.
"Such activities are uncalled for and should be refrained as these are not in accordance with the law," one of the tweets from UIDAI said.
"We emphasise that people should not display or publish their Aadhaar number in public."
The authority also said that doing Aadhaar authentication through somebody else's Aadhaar number or using someone else's Aadhaar number for any purpose may amount to impersonation and thereby constituting a criminal offence under the Aadhaar Act and the Indian Penal Code.
"Any person indulging in such acts or abetting or inciting others to do so makes themselves liable for prosecution and penal action under the law. Therefore, people should refrain from such acts," said another tweet.