Gmail website stated the phone number will be used for checking on spam. This has been done in order to protect users from being abused. Users are asked to prove that they aren’t robots for creating an ID and signing into it. Phone number could provide an additional and effective verification method for keeping spammers away. Google has said of restricting the number of accounts a person can create using one mobile number, but hasn’t specified the number yet.
For Yahoo Mail, Mobile number is required. Yahoo spokesperson said that for security of users, phone number will serve as secondary authentication method. The number will also be used for checking if any unusual activity has taken place on the account. The move has been criticized by ISPAI (internet service provider association of India) saying that there is no actual requirement for this and it could expose an individual’s privacy. They also stated that Indian government should recognize before it can take place.
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