Privacy screens

Portable devices (PDAs, phones) are widely used for business. An obvious side-effect is that business is increasingly conducted in public places, rather than just in the office. Especially on public transportation, privacy may be a growing concern. One solution is protective film that makes device screens impossible to read except for someone looking straight onto the display. Alternatively, privacy screens may be built into the device during manufacturing. Note that 3M is a manufacturer of privacy screens for PCs.