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 “case” 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
Popular articles
Trending New Scientist articles
1
We have figured out a new way to send messages into the past
2
Human heads have changed shape a lot in the past 100 years
3
Thought-provoking photographs capture what it feels like to have ADHD
4
100-year-old assumption about the universe may soon be overturned
5
The best new science fiction books of May 2026
6
An unorthodox version of quantum theory could reveal what reality is
7
Why the keto diet could be a revolutionary way to treat mental illness
8
The 4 biggest myths about hydration, according to an expert
9
Your oral microbiome could affect your weight, liver and diabetes risk
10
Is consciousness more fundamental to reality than quantum physics?