I could see having multiple single-use devices becoming a problem though too, and it doesn&#x27;t seem to solve the &quot;access&quot; problem; the single purpose device could have its own vulnerabilities (hardware or software), so it just moves the target from one device to another, while (admittedly) limiting its scope of impact.<p>I&#x27;m also not sure the market would like it either, considering that the smartphone has wholly replaced many single-purpose devices (camera, GPS, calculator, etc.). The convenience factor may outweigh the security factor for many.