Skip to main content

Reset your password

Please enter the e-mail address you used to register to reset your password

Note: The verification e-mail to change your password should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder.

If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org

Registration complete

Thank you for registering with Physics World
If you'd like to change your details at any time, please visit My account

Close
Instrumentation and measurement

Instrumentation and measurement

Human hand used as an infrared source to reveal secret messages

18 Apr 2021
Photo of a human hand
Infrared sources: front and back of a human hand, which researchers in China have used to reveal a secret message. (Courtesy: Evan-Amos/CC BY-SA 3.0)
The human hand can be used as an infrared radiation (IR) source to decrypt hidden messages and regis

You’ve reached the limit of what you can view on Physics World without registering

If you already have an account on Physics World, then please sign in to continue reading

If you do not yet have an account, please register so you can

  • Access more than 20 years of online content
  • Choose which e-mail newsletters you would like to receive

Ian Randall is a science writer based in the UK
Read previous

Metallic glasses reveal their secrets
Read next

Fast electrons catch badly behaved quantum dots in the act

Discover more from Physics World

Related jobs

Related events

Copyright © 2024 by IOP Publishing Ltd and individual contributors