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This demo presents RFind, a system that enables fine-grained RFID localization via ultra-wideband emulation. RFind operates by measuring the time-of-flight -- i.e., the time it takes the signal to travel from an antenna to an RFID tag. To do so, it emulates an ultra-wide bandwidth on today's narrowband RFIDs without requiring any hardware modification to the tags. It then uses the large emulated bandwidth to estimate the time-of-flight and localize RFIDs. In contrast to past RFID localization proposals, RFind can operate in multipath-rich environments without reference tags and without requiring tag or antenna motion. The demo will allow users to move RFID-tagged objects to any location in line-of-sight, non-line-of-sight, and multi-path rich settings and check that the system can accurately localize the objects.
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This content will become publicly available on February 24, 2026
On-demand RFID: Improving Privacy, Security, and User Trust in RFID Activation through Physically-Intuitive Design
Passive RFID is ubiquitous for key use-cases that include authentication, contactless payment, and location track- ing. Yet, RFID chips can be read without users’ knowledge and consent, causing security and privacy concerns that reduce trust. To improve trust, we employed physically-intuitive design prin- ciples to create On-demand RFID (ORFID). ORFID’s antenna, disconnected by default, can only be re-connected by a user pressing and holding the tag. When the user lets go, the antenna automatically disconnects. ORFID helps users visibly examine the antenna’s connection: by pressing a liquid well, users can observe themselves pushing out a dyed, conductive liquid to fill the void between the antenna’s two bisected ends; by releasing their hold, they can see the liquid recede. A controlled evaluation with 17 participants showed that users trusted ORFID significantly more than a commodity RFID tag, both with and without an RFID- blocking wallet. Users attributed this increased trust to visible state inspection and intentional activation.
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- Award ID(s):
- 2316294
- PAR ID:
- 10659314
- Publisher / Repository:
- Internet Society
- Date Published:
- Format(s):
- Medium: X
- Location:
- San Diego, CA
- Sponsoring Org:
- National Science Foundation
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