SMS, voice call or app: how to choose the right 2FA method for your product
Toda vez que alguém pergunta "qual método de autenticação em duas etapas eu devo usar", a resposta padrão que circula por aí é "TOTP é mais seguro, use sempre". Tecnicamente correto, mas incompleto. Segurança não é a única variável que importa quando você está desenhando um fluxo de autenticação — taxa de conversão, custo operacional e alcance geográfico do seu usuário pesam tanto quanto, e…
The article discusses the choice of two-factor authentication methods, specifically SMS, voice calls, and authenticator apps (TOTP). While TOTP is technically the most secure option, the author argues that it's not always the best choice due to factors like user adoption friction, operational costs, and geographical reach. SMS is widely used due to its ease of use, but it has known security issues like SIM swap vulnerability and delivery latency.
Voice calls can be used as a fallback when SMS delivery fails. The author suggests that the best approach is to design an authentication architecture that considers multiple methods from the start, even if only one is initially active.
Written by urgent.news from Dev.to's report — not a translation of it. Machine-written — may contain errors; check the original before relying on it.
