[{"data":1,"prerenderedAt":55},["ShallowReactive",2],{"$f2gigs57r7zkr5":3,"recommended":24},{"title":4,"path":5,"date":6,"updated":7,"tags":8,"excerpt":10,"readingMinutes":11,"commentCount":11,"html":12,"comments":13,"next":18,"prev":21},"Idea time: RFID+E-Ink, electronic price tags without batteries","\u002F2011\u002F12\u002Fidea-time-rfide-ink-electronic-price\u002F","2011-12-14T08:14:00.000Z","2011-12-14T08:14:43.410Z",[9],"idea time","I got this idea years ago, somewhere in 2004 after I had heard both of RFID and E-Ink. The order is irrelevant ;) The idea is simple, we take: RFID readers, which send radio waves to tags, which pick up some of the…",1,"\u003Cp>I got this idea years ago, somewhere in 2004 after I had heard both of RFID and E-Ink. The order is irrelevant ;) The idea is simple, we take:\u003C\u002Fp>\n\u003Col>\n\u003Cli>\n\u003Cp>RFID readers, which send radio waves to tags, which pick up some of the energy in the wave, do some computations and send a reply. The tags are brilliant: no batteries, no connected power source of any kind except for the antenna.\u003C\u002Fp>\n\u003C\u002Fli>\n\u003Cli>\n\u003Cp>E-Ink displays, which need power only to change pixels. After the power is cut off, the pixels remain in their current state.\u003C\u002Fp>\n\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Cp>The result: a small tag with a display. The display gets initialised and updated by an RFID-reader and after that retains its state indefinitely.\u003C\u002Fp>\n\u003Cp>Perfect for price tags on shelves in supermarkets, which need to be updated every now and then but are hellish to replace.\u003C\u002Fp>\n\u003Cp>I soon found out in 2004 that Epson had already done this: \u003Ca href=\"http:\u002F\u002Fgizmodo.com\u002F026090\u002Fepsons-electronic-ink-%252B-rfid--21st-century-price-tags\">http:\u002F\u002Fgizmodo.com\u002F026090\u002Fepsons-electronic-ink-%252B-rfid--21st-century-price-tags\u003C\u002Fa>\u003C\u002Fp>\n",[14],{"author":15,"date":16,"html":17},"brittanymlemay","2015-11-17T09:21:34.355+01:00"," The result: a small tag with a display. The display gets initialised and updated by an RFID-reader and after that retains its state indefinitely.  \u003Ca href=\"http:\u002F\u002Fwww.blessthisstuff.com\u002Fstuff\u002Ftechnology\u002Fmisc-gadgets\u002Fbatteriser\u002F\" rel=\"nofollow\">800% batteries\u003C\u002Fa>",{"title":19,"path":20},"Idea time: supermarket navigation","\u002F2011\u002F12\u002Fidea-time-supermarket-navigation\u002F",{"title":22,"path":23},"Idea time","\u002F2011\u002F12\u002Fidea-time\u002F",[25,30,35,38,42,45,48,52],{"title":26,"path":27,"note":28,"series":29},"Mapping out Dark Code","\u002F2026\u002F03\u002Fmapping-out-dark-code\u002F","2026",false,{"title":31,"path":32,"note":33,"series":34},"The software that I love","\u002F2022\u002F10\u002Fthe-software-that-i-love\u002F","Series · 36 posts",true,{"title":36,"path":37,"note":28,"series":29},"Navigating the Fog of War: Age of Empires, AI Agents, and the Rise of Dark Code","\u002F2026\u002F05\u002Fnavigating-fog-of-war-age-of-empires-ai\u002F",{"title":39,"path":40,"note":41,"series":29},"The Future of Programming Systems - four thoughts","\u002F2024\u002F09\u002Fthe-future-of-programming-systems-four\u002F","2024",{"title":43,"path":44,"note":41,"series":29},"Always Optimize the Feedback Loop","\u002F2024\u002F07\u002Falways-optimize-feedback-loop\u002F",{"title":46,"path":47,"note":41,"series":29},"\"Security Is Our Top Priority\" is BS","\u002F2024\u002F07\u002Fsecurity-is-our-top-priority-is-bs\u002F",{"title":49,"path":50,"note":51,"series":29},"10x teams","\u002F2025\u002F02\u002F10x-teams\u002F","2025",{"title":53,"path":54,"note":51,"series":29},"Hiring, from the Other Side","\u002F2025\u002F10\u002Fhiring-from-other-side\u002F",1792876809236]