Matsushita has developed a video monitor system that snaps pictures of anyone
who rings your doorbell while you are out for the day. Called the Television
Doorphone, the device captures up to 16 snapshots per day on an 8-megabyte flash
memory chip. If security is the aim, you can check whether a burglar is turning
up regularly to 鈥渃ase鈥� the area for empty houses. Of course, the device also
makes a kind of visual answering machine.
More from New Scientist
Explore the latest news, articles and features
Physics
Record-breaking, fast-spinning magnet could help uncover new physics
News
Environment
An unexpected feedback loop may be driving mega heatwaves
News
91色情片
Less than 4 minutes of vigorous exercise a day could halve your dementia risk
News
91色情片
Parkinson鈥檚 may be driven by ‘vicious cycle’ that disrupts brain waste drainage
News
Popular articles
Trending New Scientist articles