A tech demo (technology demonstration) is a prototype, rough example or an otherwise incomplete version of a product, put together with the primary purpose of showcasing the idea, performance, method or the features of the product. They can be used as demonstrations to the investors, partners, journalists or even to potential customers in order to convince them of the viability of the chosen approach. See Investor AB for the Swedish investment company An investor is any party that makes an Investment.
A frequent example of tech demos in the computer industry is Douglas Engelbart's demonstration of oN-Line System in 1968. NLS, or the "oN-Line System" was a revolutionary Computer collaboration system designed by Douglas Engelbart and the researchers
Computer technology demos should not be confused with demoscene-based demos, which, although often demonstrating new software techniques, are regarded as a stand-alone form of computer art. The demoscene is a Computer art Subculture that specializes in producing demos, which are non-interactive audio-visual presentations that run in A demo is a non-interactive multimedia presentation made within the computer Subculture known as the Demoscene.
Occasionally, technology demos prove out to be rigged or even completely fake. For example, an empty case with some blinking LEDs can be presented as the product, a demo of Internet QoS software can be done on a LAN with manually-regulated traffic, and a pre-rendered video or pictures with notably higher-quality models or resolution can be presented as actual game footage. The Internet is a global system of interconnected Computer networks This last example happens so often in the game industry, it has earned the nickname bullshot.
"Any sufficiently advanced technology is indistinguishable from a rigged demo. " - Andy Finkel