Valve aims to improve Dota 2 matchmaking by tying phone numbers to accounts

Valve is hoping to cut down on the number of high-level players that use multiple accounts for ranked matches of Dota 2 by requiring players to register their phone numbers ahead of queuing up. The policy change aims to gently discourage players from using alternate accounts in ranked matches, a practice which often would muddle Dota 2’s skill-ranked matchmaking and create a negative experience