User:Eastwood

Physcial Data

Data to Audio Cassette

Saving data to Audio cassette. Scarcity of resource? The basic principle is to convert either binary or Hex into audio signal, and then reverse the operation (simple......). Found a method for HAM Radio signals to transmit images, system is called Slow-Scan Television.

ctape

A ruby application for writing and reading plain-text on audio cassette or into analogue audio. Based on Commodore Datassette system.

http://www.windytan.com/2012/08/vintage-bits-on-cassettes.html

Uses a sound software/framework called SOX

TODO : Need to learn how this works so that I may be able to modify, improve, or just learn.

Data to Light

Fibre. Morse.

Data to Image

Barcodes. Embedded information.

Encryption

http://practicalcryptography.com/

Data Validation

Not really encryption but important in validation of "worth". Blockchain signatures.

Visual Cryptography

Using relatively simple analogue techniques to break an image into seemingly random noise. Article can be found here.

OpenPGP

Opensource version of the Pretty Good Privacy encryption system. Uses asymmetrical keys to verify data access.

A beginners guide (and setup) can be found here. Opensource PGP encryption system GnuPG.

A comprehensive guide to PGP Encryption and usage instructions for GnuPG can be found here. Basic concepts are explained and usage instructions too.