Signal Phone Number Requirement

The cluster focuses on debates about Signal's mandatory use of phone numbers for registration, contact discovery, and messaging, with users criticizing it for privacy risks and calling for alternatives like usernames or emails. Discussions compare it to other apps and weigh its security benefits against anonymity concerns.

📉 Falling 0.4x Security
4,824
Comments
14
Years Active
5
Top Authors
#6764
Topic ID

Activity Over Time

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Keywords

signal.org IMHO Signal.org OK Signal.me WhatsApp signalusers.org WhisperSystems MITM github.com signal phone number phone number contact sms contacts phone numbers attacker location

Sample Comments

Canada • Apr 27, 2023 • View on HN

I wish Signal would enable this.

hrns • Jan 7, 2021 • View on HN

Signal requires phone number in order not to store your contact list on their servers. Instead of id's/email addresses/nicknames they are using your phone contact list. IMHO that's better for privacy.

hkt • Dec 22, 2016 • View on HN

This does somewhat break Signal's security model..

hu3 • Dec 7, 2023 • View on HN

Last I checked, Signal requires and uses your phone number.

nottorp • Oct 12, 2022 • View on HN

Im tired of super secure apps that ask for your phone number and even publish it to your contacts. Wake me up when Signal doesnt depend on a phone number any more.

ohhnoodont • May 19, 2020 • View on HN

Does this mean we will finally be able to use Signal without a phone number?

tasogare • Oct 5, 2021 • View on HN

Signal is asking phone number to use, I don't see how this is good for sensitive communication (since metadata alone are often very informative).

alvil • Sep 21, 2017 • View on HN

I'm wondering if it is possible also with Signal (signal.org)

OsrsNeedsf2P • Feb 19, 2025 • View on HN

"Sorry, I only use Signal" has worked nearly a decade for me

waynesonfire • Nov 19, 2022 • View on HN

Oh wow, looks like Signal requiring a phone number strikes a good balance.