A March 3, 2026 publication questions claims about a portable audio blocker and highlights limits in device detection, range, and acoustic propagation.
On March 3, 2026, a publication examined claims about a portable audio blocker, comparing it with existing ultrasonic blockers and DIY kits. The text points to possible limitations in detecting devices and in blocking range.
It also notes that room reflections, fabrics, and other obstacles can affect performance. Engineers assessing privacy hardware should consider these factors before relying on a blocker. Consult the original publication to check its claims and assessments; the supplied material reports no measurements or quantitative results.