This is what is in euro bills right?
There were talks, but they didn't go through with it.
In 2006, Hitachi developed a 0.15mm-sized RFID chip
41–50 of 75 posts
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#42This is what is in euro bills right?
Years later we put a newer version of this chip with a secure element into Bitcoin bills.[1]
Hand waiving a lot of the details, each note basically becomes a hardware wallet with some additional features to prevent double spending.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#43The most amazing thing about this (and another tiny RFID chip that was on HN recently) is not that you can print them on wafers, but that you can cut up the wafers and handle these tiny dies. Imagine you manufactured sugar, but had to manipulate each sugar grain separately.
I have always wondered how this works (along with wire bonding), especially in an economic way. Chips being cheap makes sense at the lithography / wafer level because sure, you can stamp out thousands of them at once. But once you need to dice them up, bond wires to them, and package them... how on earth do you do that so efficiently that each chip can be sold for fractions of a cent?
Well, these ones are RFID chips, so they don't need to be connected at all - they are read wirelessly.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#44Earlier quoted context omitted.
What never cease to amaze me with conspiracy theorists, is that they keep inventing preposterous “conspiracies” while being totally oblivious about the real world. Like why bother putting chips in banknotes when the government could track everyone in real time through their smartphone.
Sure, but in this case the /. comment was from 2004.
And phone tracking and recording was in place since phones went mobile. Sure, nothing smart there but BTS were there, and NSA was listening on all levels.
CIA/NSA perfected the art of tapping optical undersea cables using special submarines without interrupting data flows in 90s IIRC.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#45Earlier quoted context omitted.
I have a hobby project where I am using UHF tags for counting poultry. The advantage that it gives me is long range (few meters) compared to LF / HF tags. QR code also wouldn't work due to size and distance. Here's a video. https://youtu.be/_iGn_pZ3IkY
Really nifty; can I ask what tags you are using? (are they off-the-shelf) Would be interested in doing something similar
These:
https://www.chafon.com/productinfo/1070742.html
Bought them on Alibaba.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#46This is what is in euro bills right?
Years later we put a newer version of this chip with a secure element into Bitcoin bills.[1] Hand waiving a lot of the details, each note basically becomes a hardware wallet with some additional features to prevent double spending. [1] https://offline.cash
This is cool, I thought of something similar, didnt know someone implemented it and the swizz like bank note design is neat.
but its still has flaws imo and just makes it a novelty rather than something practical or useful, for example unless the vendor has change, you would have to spend your btc cash denomination as a whole or exchange it for fiat. what if both the vendor & customer didn't have internet access, how would they check if the cash hasn't been used? idk if you can write back to an rfid that may solve some problems
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#47This is what is in euro bills right?
Years later we put a newer version of this chip with a secure element into Bitcoin bills.[1] Hand waiving a lot of the details, each note basically becomes a hardware wallet with some additional features to prevent double spending. [1] https://offline.cash
With respect, this gives me serious ick. Black mirror vibes.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#48presented in 2005 World Exposition, a time where hydrogen fuel cell was the whole future.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#49The most amazing thing about this (and another tiny RFID chip that was on HN recently) is not that you can print them on wafers, but that you can cut up the wafers and handle these tiny dies. Imagine you manufactured sugar, but had to manipulate each sugar grain separately.
I have always wondered how this works (along with wire bonding), especially in an economic way. Chips being cheap makes sense at the lithography / wafer level because sure, you can stamp out thousands of them at once. But once you need to dice them up, bond wires to them, and package them... how on earth do you do that so efficiently that each chip can be sold for fractions of a cent?
Packaging used to be a huge portion of the industry, in the 80's when pin counts exploded and litho got cheaper it was usually the most expensive part of a chip.
Today, it's cheaper mostly because of flip chips and Wafer Level Chip Scale Packaging (WLCSP). You build the bond pads as a normal litho step, and use a dielectric that's non-wettable between them. Then you can just use a mask to produce a grid of solder balls in the right places, drop the chip on them and put it in an oven. When the solder melts, the chip will self-align on it, so long as it's not too far off. It's uncanny to see it move.
Re: In 2006, Hitachi developed a 0.15mm-sized RFID chip
#50So that's what's in the smallpox vaccine.