Why would one want this? Are there particular situation(s) that it's desirable to detect a TCP proxy? Does presence of a TCP proxy indicate some adverserial behaviour? E.g. surveillance, censorship, a particular attack?
There was https://idiallo.com/blog/zipbomb-protection earlier this year. It sends highly compressed output of /dev/zero. No overlapping files or recursively compressed payloads.
Around 1999 I interned at Philips Semiconductor. I worked with one of the first or early engineers of Teletext (aka BBC Ceefax) - a system designed in the 1970s that encoded text pages within an analog TV signal.
The World Wide Web was just getting popular and he was happy to point out he managed to get @ into the limited character set (maybe called a codepage?) all the way back in the 1970s. However many (all?) international variants used different character sets that replaced @ and other uncommon characters with accented characters for their alphabets/languages.
As a result Teletext in the UK (using the english character set) could show email addresses, but not in most (all?) other countries.
I'm pleasantly surprised there are any devices supporting SD Express. I thought the standard had died on the vine. So Apple, please pull your finger out and include SD Express in the MBP models that have an SD slot.
I don't know the current draw of either. I don't know if newer designs are better, I only have one I bought around 10-15 years ago. For mine a bettery left in the calipers depletes within a few months, without use.
Recommend you take the CR2032 out when not using the calipers. Cheap/no name ones (atleast those sold 5-10 years ago) have a relatively high standby current, even when the LCD screen is off.
https://moreati.org.uk/ https://social.moreati.org.uk/@alex
[ my public key: https://keybase.io/moreati; my proof: https://keybase.io/moreati/sigs/0NRA_TnGMfWlFUd7jrTrJqT2QOxC7wD7yEyjNtxLc4c ]