--- title: Tamper Detection With Time-Domain Reflectometry | daily.dev description: Researchers developed an affordable time-domain reflectometry system for tamper detection in high-security devices. The system sends sharp pulses through... canonical: https://daily.dev/posts/vfohg98cj twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Tamper Detection With Time-Domain Reflectometry | daily.dev og:description: Researchers developed an affordable time-domain reflectometry system for tamper detection in high-security devices. The system sends sharp pulses through... og:url: https://daily.dev/posts/vfohg98cj og:image: https://api.daily.dev/og/posts/VFoHg98CJ.png og:image:alt: Post cover image og:image:width: 1200 og:image:height: 630 og:locale: 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. # Tamper Detection With Time-Domain Reflectometry **[Cyber Devs](https://daily.dev/sources/cyberdevelopers)** · [@illusivebyte](https://daily.dev/illusivebyte) · 0 upvotes · 0 comments ## Summary Researchers developed an affordable time-domain reflectometry system for tamper detection in high-security devices. The system sends sharp pulses through protective circuit meshes and times returning echoes to create fingerprints, detecting physical intrusions when new echoes appear from damaged traces. Built around an STM32G4 microcontroller with sub-200 picosecond timer resolution and HDMI redriver chips for pulse amplification, the design achieves high sensitivity at low cost, detecting even oscilloscope probe contact and temperature changes. While not impossible to bypass, defeating it requires significant skill and specialized equipment like non-conductive drill bits. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Hidden Chip Activity Exposed By Sensing With Terahertz Radiation](https://daily.dev/posts/hidden-chip-activity-exposed-by-sensing-with-terahertz-radiation-g15lf2b3y) · IEEE Spectrum · 0 upvotes · 0 comments - [TDR For Auto Diagnostics Done On The Cheap](https://daily.dev/posts/tdr-for-auto-diagnostics-done-on-the-cheap-b27cionyp) · Hackaday · 0 upvotes · 0 comments - [ORNL builds more sensitive GPS interference detector](https://daily.dev/posts/ornl-builds-more-sensitive-gps-interference-detector-l2ez6takr) · The Register · 0 upvotes · 0 comments - [A new way to watch heat move through electronics](https://daily.dev/posts/a-new-way-to-watch-heat-move-through-electronics-clxbougks) · MIT News · 0 upvotes · 0 comments - [Quantum-enhanced interferometry amplifies detection of tiny laser beam shifts and tilts](https://daily.dev/posts/quantum-enhanced-interferometry-amplifies-detection-of-tiny-laser-beam-shifts-and-tilts-usr8xzoqc) · Phys.org · 0 upvotes · 0 comments --- Tags: [#embedded](https://daily.dev/tags/embedded), [#hardware](https://daily.dev/tags/hardware), [#security](https://daily.dev/tags/security), [#signal-processing](https://daily.dev/tags/signal-processing), [#stm32](https://daily.dev/tags/stm32) [View this post on daily.dev](https://daily.dev/posts/vfohg98cj) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/vfohg98cj","headline":"Tamper Detection With Time-Domain Reflectometry","text":"Shared: Tamper Detection With Time-Domain Reflectometry","url":"https://daily.dev/posts/vfohg98cj","datePublished":"2026-01-26T13:20:39.467Z","dateModified":"2026-06-04T02:12:34.249Z","author":{"@type":"Person","name":"Jared","url":"https://daily.dev/illusivebyte","image":"https://media.daily.dev/image/upload/s--zF1vMG64--/f_auto/v1789049379/avatars/avatar_kP9JUul7BNQjEE0VWryE3?_a=BAMAMicg0","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":1390}},"image":"https://media.daily.dev/image/upload/s--foaA6JGU--/f_auto/v1722860399/public/Placeholder%2004","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/rZexJdGoS"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/cyberdevelopers","name":"Cyber Devs"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Cyber Devs","item":"https://daily.dev/squads/cyberdevelopers"},{"@type":"ListItem","position":3,"name":"Tamper Detection With Time-Domain Reflectometry"}]} ```