Abstract
This paper presents a technique enabling distributed batteryless near-field identification (ID) between two passive radio frequency ID (RFID) tags. Each conventional ultra-high-frequency (UHF) RFID tag is modified by connecting its antenna and chip to a reed switch and then attaching a magnet to one of the reed switch's terminals, thus transforming it into an always-on switch. When the two modules approach each other, the magnets counteract each other and turn off both switches at the same time. The coabsence of IDs thus indicates a unique interaction event. In addition to sensing, the module also provides native haptic feedback through magnetic repulsion force, enabling users to perceive the system's state eyes-free, without physical constraints. Additional visual feedback can be provided through an energy-harvesting module and a light emitting diode. This specific hardware design supports contactless, orientation-invariant sensing, with a form factor compact enough for embedded and wearable use in ubiquitous computing applications.
Original language | English |
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Title of host publication | UIST 2018 - Proceedings of the 31st Annual ACM Symposium on User Interface Software and Technology |
Place of Publication | New York |
Publisher | Association for Computing Machinery, Inc |
Pages | 473-483 |
Number of pages | 11 |
ISBN (Electronic) | 9781450359481 |
ISBN (Print) | 978-1-4503-5948-1 |
DOIs | |
Publication status | Published - 11 Oct 2018 |
Event | 31st Annual ACM Symposium on User Interface Software and Technology (UIST 2018): UIST '18 - Berlin, Germany Duration: 14 Oct 2018 → 17 Oct 2018 |
Conference
Conference | 31st Annual ACM Symposium on User Interface Software and Technology (UIST 2018) |
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Country | Germany |
City | Berlin |
Period | 14/10/18 → 17/10/18 |
Keywords
- Batteryless
- Magnet
- Near-field identification
- Reed switch
- RFID
- Wearables