# electronic

Published articles for electronic.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## How Temporal's Senior Developer Advocate Built 2,000 Interactive Badges for Replay

DevFeed: [How Temporal's Senior Developer Advocate Built 2,000 Interactive Badges for Replay](<https://devfeed.tech/articles/i-built-2-000-badges-for-replay-and-i-m-not-sure-i-ve-slept-since-december-35730.md>)

Original publisher: [Read original article](<https://temporal.io/blog/badges-for-replay-and-i-havent-slept-since-december>)

Author: Shy Ruparel

Published: 2026-05-20T00:00:00Z

Content type: article

Language: en

Sources: [Temporal Blog](<https://devfeed.tech/sources/temporal-blog.md>)

Topics: [Hardware](<https://devfeed.tech/topics/hardware.md>), [developer-relations](<https://devfeed.tech/topics/developer-relations.md>), [keyboard](<https://devfeed.tech/topics/keyboard.md>), [screen](<https://devfeed.tech/topics/screen.md>), [Job](<https://devfeed.tech/topics/job.md>)

Tags: [community](<https://devfeed.tech/tags/community.md>), [conference](<https://devfeed.tech/tags/conference.md>), [developer](<https://devfeed.tech/tags/developer.md>), [electronic](<https://devfeed.tech/tags/electronic.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [interactive](<https://devfeed.tech/tags/interactive.md>), [manufacturing](<https://devfeed.tech/tags/manufacturing.md>), [project](<https://devfeed.tech/tags/project.md>), [temporal-voices](<https://devfeed.tech/tags/temporal-voices.md>)

### AI overview

Temporal Senior Developer Advocate Shy Ruparel describes the design and manufacturing process behind 2,000 interactive electronic badges made for the Replay developer conference, including the project's hardware concepts and production challenges.

### Source excerpt

Temporal's Senior Developer Advocate, Shy Ruparel, built 2,000 interactive electronic badges for Replay. Here's how he pulled it off.

## Letterlocking

DevFeed: [Letterlocking](<https://devfeed.tech/articles/letterlocking-36869.md>)

Original publisher: [Read original article](<https://shostack.org/blog/letterlocking/>)

Author: Adam

Published: 2022-01-12T00:00:00Z

Content type: article

Language: en

Sources: [Shostack & Friends Blog](<https://devfeed.tech/sources/shostack-friends-blog.md>)

Topics: [Security](<https://devfeed.tech/topics/security.md>), [Cryptography](<https://devfeed.tech/topics/cryptography.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [electronic](<https://devfeed.tech/tags/electronic.md>), [history](<https://devfeed.tech/tags/history.md>), [security](<https://devfeed.tech/tags/security.md>)

### AI overview

The article discusses letterlocking, a historical method of folding letters into their own envelopes to protect them from surreptitious readers. It describes how these techniques evolved, used paper manipulation and wax seals, and provided varying levels of security before mass-produced gummed envelopes and widespread cryptography.

### Source excerpt

Letterlocking is a lost art of protecting letters from surriptitious readers.