Spam calls and SMSes are not just annoying but are also a threat, with several cases of unscrupulous elements sending shady investment tips. Photo: Pradeep Gaur/MintNew Delhi: The Telecom Regulatory Authority of India (Trai) has issued draft guidelines to curb unwanted phone calls and text messages using blockchain technology. What are spam calls and SMSes? Under the current regulatory framework, a customer can register to fully or partially block calls and SMSes from telemarketers using the toll-free code 1909. So, although the information is available in a centrally accessible ledger, it is available only to registered telemarketers.

Source: Mint June 01, 2018 08:03 UTC