Hiding data inside photos is easily done using Steganography software freely available on the Internet. But now scientists have developed a new way of Steganography by which you can hide your secret messages inside live bacteria.
The secret biological messages are first grown in laboratories in Petri dishes. These developed cultures are then transferred to a thin film and sent to the desired recipient. To decode the message, the recipient must again transfer it to a growth medium (any kind of chemical that reacts to the bacteria), which acts as a secret key here.