--- title: Winner, Name that Ware September 2026 « bunnie's blog description: This month's mystery ware is a tire pressure monitor from a late 1980s to early 1990s Porsche, made by Bosch. The system used transponders fitted into special... canonical: https://daily.dev/posts/winner-name-that-ware-september-2026-bunnie-s-blog-25ycaduwz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Winner, Name that Ware September 2026 « bunnie's blog | daily.dev og:description: This month's mystery ware is a tire pressure monitor from a late 1980s to early 1990s Porsche, made by Bosch. The system used transponders fitted into special... og:url: https://daily.dev/posts/winner-name-that-ware-september-2026-bunnie-s-blog-25ycaduwz og:image: https://api.daily.dev/og/posts/25YcADuWZ.png og:image:alt: Winner, Name that Ware September 2026 « bunnie's blog 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. # Winner, Name that Ware September 2026 « bunnie's blog **[bunnie's blog](https://daily.dev/sources/bunniestudios)** · 1 min read · 0 upvotes · 0 comments ## Summary This month's mystery ware is a tire pressure monitor from a late 1980s to early 1990s Porsche, made by Bosch. The system used transponders fitted into special wheels, with a pressure switch that changed a signal sent to an antenna mounted on each wheel's suspension, operating at a high frequency of probably a few MHz. The design was apparently unpopular because changing to wheels without transponders caused lots of alarms. Drew Macrae won by noticing the Bosch logo peeking between the pins. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How did early tire pressure monitoring systems work before modern wireless TPMS sensors? An early Bosch tire pressure monitor fitted to late 1980s to early 1990s Porsche models used transponders placed in pockets inside special wheels. An antenna mounted on each wheel's suspension operated at a frequency of a few MHz. When tire pressure dropped below a threshold, a pressure switch in the transponder opened or closed, changing the signal sent back to the antenna, which then alerted the instrument cluster. Swapping to wheels without transponders triggered false alarms, making the system unpopular. _Fans of reverse-engineered vintage hardware can find more teardown stories like this on daily.dev._ ## Similar posts on daily.dev - [Vehicle Tire Pressure Sensors Enable Silent Tracking](https://daily.dev/posts/vehicle-tire-pressure-sensors-enable-silent-tracking-5jbcpxy85) · Dark Reading · 0 upvotes · 0 comments - [Tech In Plain Site: Finding A Flat Tire](https://daily.dev/posts/tech-in-plain-site-finding-a-flat-tire-2l6pm8cux) · Hackaday · 1 upvotes · 0 comments - [Winner, Name that Ware August 2026 « bunnie's blog](https://daily.dev/posts/winner-name-that-ware-august-2026-bunnie-s-blog-zlfclw0am) · bunnie's blog · 0 upvotes · 0 comments - [Reverse-Engineering A Handheld Car Tire Pressure Gauge](https://daily.dev/posts/reverse-engineering-a-handheld-car-tire-pressure-gauge-2pe9glbb7) · Hackaday · 0 upvotes · 0 comments - [Winner, Name that Ware July 2026 « bunnie's blog](https://daily.dev/posts/winner-name-that-ware-july-2026-bunnie-s-blog-gbvyrnx8n) · bunnie's blog · 0 upvotes · 0 comments --- Tags: [#reverse-engineering](https://daily.dev/tags/reverse-engineering) [View this post on daily.dev](https://daily.dev/posts/winner-name-that-ware-september-2026-bunnie-s-blog-25ycaduwz) ```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":"TechArticle","headline":"Winner, Name that Ware September 2026 « bunnie's blog","url":"https://daily.dev/posts/winner-name-that-ware-september-2026-bunnie-s-blog-25ycaduwz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/winner-name-that-ware-september-2026-bunnie-s-blog-25ycaduwz"},"datePublished":"2026-10-26T08:04:12.383Z","dateModified":"2026-10-26T08:15:08.862Z","description":"This month's mystery ware is a tire pressure monitor from a late 1980s to early 1990s Porsche, made by Bosch. 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An antenna mounted on each wheel's suspension operated at a frequency of a few MHz. When tire pressure dropped below a threshold, a pressure switch in the transponder opened or closed, changing the signal sent back to the antenna, which then alerted the instrument cluster. Swapping to wheels without transponders triggered false alarms, making the system unpopular. Fans of reverse-engineered vintage hardware can find more teardown stories like this on daily.dev."}}]} ```