a cast metal cuff that jams every microphone within two metres. you wear it to a dinner. your phone hears nothing.
every person reading this is carrying a MEMS microphone in their pocket. the sound jammer bracelet disrupts them. ten ultrasonic transducers arrayed on a modular pod system. when activated, every microphone within two metres captures nothing.
it looks like jewellery because it is jewellery. most surveillance art makes the invisible visible. this work does the opposite. it conceals. the jamming is a private act between the wearer and the object. no one at the table needs to know.
ten ultrasonic transducers emit signals above human hearing that overwhelm MEMS microphones: the kind in your phone, your smart speaker, your laptop. the jamming radius is approximately two metres. the electronics design draws on published research (Chen et al., "Wearable Microphone Jamming," University of Chicago, 2020) adapted to a jewellery-scale form factor.
designed in parametric CAD (Python/Blender). prototyped on consumer 3D printers. modular pod system: each transducer sits in its own socket that press-fits into the bangle. ten pods at three tilt angles for spherical coverage. the production path is lost-wax casting in brass or silver. currently on version 8, post-print iteration.
the design is open. CAD files, STL exports, circuit schematics, and bill of materials will be published when the electronics are finalised. no engineering background required to build. the designer has none.