In France, there are at least two companies that are trying (or tried) to commercialize something with a similar idea : domestic radiators that produce heats from embedded computers that are used as cloud infrastucture.
- https://www.hestiia.com/en for the end-user market
- https://qarnot.com/en that seems to have since pivoted to low-carbon footprint HPC (was mentionned here -- in French -- as doing computer-based heaters : https://www.takagreen.com/solutions/qarnot-radiateur-ordinat... )
And also, they are a lot of project to redistribute heat from data centers into city heat distribution systems. A data center for Equinix, for example, redistribute the generated heat into SMIREC heat network near Paris. This heat network is used, among other building, to heat an aquatic center that was used during the Olympics for Water Polo, diving and artistic swimming.
MIFARE DESFire is an option. In a genral public reseller, I found 100 DESFire cards sold for 146€ (tax excluded), while 100 of the equivalent versions as MIFARE Classic are sold for 109€ (tax excluded). This is a differnce of 37 cents by card, MIFARE Classic are about 25% less expensive than MIFARE DESFire. I guess the difference increase with the quantity you buy at once.
Owner of a PhD in cryptology, I worked as a tech leader/CTO for the last 10 years in startups building security solutions based on secure computation enclave, co-founded one. This gave me the opportunity to become familiar with a wide range of technologies, from embedded computing to cloud-based services.
Owner of a PhD in cryptology, I worked as a tech leader/CTO for the last 10 years in startups building security solutions based on secure computation enclave, co-founded one. This gave me the opportunity to
become familiar with a wide range of technologies, from embedded computing to cloud-based services.
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