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How to find a person and recognize their pose using Wi-Fi
Researchers have learned to recognize the positions and poses of people indoors using Wi-Fi signals. To do this, they used ordinary home routers and machine learning.
imagesWatch the (verified) birdie, or new ways to recognize fakes
How to tell a real photo or video from a fake, and trace its provenance.
The secret’s out: cropped and edited pictures can be restored
Do you edit images in Windows 11 or on Google Pixel? Due to a developer error, hidden information in cropped or edited pictures can be recovered.
Leaky images and other foibles of office documents
If you work with sensitive data, these obscure features of PDF, MS Office, and cloud documents are worth knowing.
Think you know how to hide info in images?
We explain how to hide private data in images properly, without making rookie mistakes.