--- title: "A developer created an ESP32 device that releases encrypted files to trusted people on a timer" url: https://daily.dev/posts/a-developer-created-an-esp32-device-that-releases-encrypted-files-to-trusted-people-on-a-timer-x78pqvgko source_url: https://www.xda-developers.com/a-developer-created-an-esp32-dead-mans-switch-that-releases-encrypted-files-to-trusted-people-on-a-timer type: article source: "XDA Developers" published: 2026-06-27T05:11:59.939Z updated: 2026-06-27T05:12:18.184Z tags: ["open-source", "iot", "embedded", "encryption"] reading_time: 3 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # A developer created an ESP32 device that releases encrypted files to trusted people on a timer **[XDA Developers](https://daily.dev/sources/xda-developers)** · 3 min read · 0 upvotes · 0 comments ## Summary Memento is an open-source ESP32-S3-based device that stores encrypted files and releases them to designated users after a timed countdown. Users enter a PIN to start the countdown, while the owner can cancel it with a master PIN. Each user can be assigned specific files and individual timer lengths, enabling controlled data release without the owner being present. Built with an e-ink display, RTC module, and LiPo battery, the device can run for months on a single charge. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [A Simple Desktop Pomodoro Timer](https://daily.dev/posts/a-simple-desktop-pomodoro-timer-h1cv4cuu2) · Hackaday · 0 upvotes · 0 comments - [You, too, can make this easy ESP32 clock with Pomodoro timers](https://daily.dev/posts/you-too-can-make-this-easy-esp32-clock-with-pomodoro-timers-b2lpfvcur) · XDA Developers · 0 upvotes · 0 comments - [An ESP32-S3 e-paper development board with 3.97-inch touchscreen, LoRa, and NFC](https://daily.dev/posts/an-esp32-s3-e-paper-development-board-with-3-97-inch-touchscreen-lora-and-nfc-j6zceqyxi) · CNX Software · 0 upvotes · 0 comments - [You, too, can make this sleek digital Pomodoro timer that runs off an ESP32](https://daily.dev/posts/you-too-can-make-this-sleek-digital-pomodoro-timer-that-runs-off-an-esp32-kyed75cbi) · XDA Developers · 2 upvotes · 0 comments --- Tags: [#open-source](https://daily.dev/tags/open-source), [#iot](https://daily.dev/tags/iot), [#embedded](https://daily.dev/tags/embedded), [#encryption](https://daily.dev/tags/encryption) [View this post on daily.dev](https://daily.dev/posts/a-developer-created-an-esp32-device-that-releases-encrypted-files-to-trusted-people-on-a-timer-x78pqvgko)