New Optical Security Doesn't Require Embedment

An anonymous reader writes "Scientists are claiming to have a new type of optical security that doesn't require embedment. Optical security includes many different options but up until now they have all required that the secret image be embedded in a host image which left it vulnerable. From the article: 'To address this problem of finding the secret image in the watermark, scientists have developed a new optical security method that doesn't require embedment. Instead, the technique uses a phase retrieval algorithm to generate specific optical and phase keys that extract the secret information when applied. The optical keys contain information and are distributed to an individual through a personal identification number (PIN). The information contained in the phase keys (the main source for determining extraction) is distributed to the individual separately.'"

Comments

Embedment?

[zenmojodaddy]

A fine cromulent word with which to embiggen your article.

embedment?

[phreakv6]

i want enlightenment on the article first.
is the summary in greek or in latin?

Through the PIN ?!?

[NoahKing]

The optical keys contain information and are distributed to an individual through a personal identification number (PIN).

The files are *in* the computer?!?

Re:Does anyone actually understand this?

[Haeleth]

The article is indeed about stenography.

Really? I read it three times, and I still can't see a single reference to shorthand.

Can't find reference to stenography?

[KWTm]

The article is indeed about stenography.

Really? I read it three times, and I still can't see a single reference to shorthand.

Of course you don't see it. The message is hidden in the least significant bit of every letter.