---
title: IoT SIM Card - Theft Prevention
canonical: https://telnyx.com/release-notes/sim-card-theft-prevention
---
# IoT SIM Card - Theft Prevention

[Release notes](https://telnyx.com/release-notes)

# SIM Card Theft Prevention

### 17, Dec 2021

You can now choose to add up to 5 authorized IMEI (International Mobile Equipment Identity) numbers to a Telnyx SIM card, and set that SIM card to auto-disable when it recognizes a device with an unauthorized IMEI. This ensures your SIMs can only be used by devices you authorize.

Set up theft prevention on your SIM cards in the [Mission Control Portal](https://portal.telnyx.com/#/app/wireless/sim-cards), or find out more in our [support knowledge base](https://support.telnyx.com/en/articles/5761437-sim-card-theft-prevention).

[Start building](https://telnyx.com/sign-up)

### Ask AI

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