Wireless keyboard

A wireless keyboard or colloquially Cordless Keyboard or Wireless Keyboard is a wireless keyboard (as opposed to infrared keyboards) transmits its data via a radio signal to the PC. In any case, the keyboard of the station and connected to the PC unit of the receiver.

When data is transmitted via infrared keyboard and receiver must communicate with each other in sight. Obstacles, such as a pile of books between them, lead to the loss of the connection. The wireless data transfer has the advantage that it can also bridge barriers.

Wireless keyboards require their own power supply.

Vs. security in wireless keyboards. Cables Keyboards

For all three methods ranges within a room 3-5 m are to cope with most situations. Disadvantage of Funk: In a large range of the data (neighboring apartments) can be received theoretical and larger radius. This represents a serious security problem because the most inexpensive wireless keyboards ship their data unencrypted.

What it is easy to forget: The little or no shielded cable of a cable keyboard act as an antenna. In addition, the signal transmission via this cable can cause small disturbances in the power network. From both results that the signals can be read out at least with sensitive measuring instrument, provided someone is willing to operate the corresponding expense. A wireless keyboard with encryption can therefore safer than a wired keyboard might be no encryption.

Whether and how well the inputs are encrypted, should be brought carefully before purchasing the manufacturer in experience. Some manufacturers now 128 -bit AES encryption from the factory for all alphanumeric and modifying ( Alt, Shift, etc) keys is common. This allows the signals indeed bugged, but stand at present practically not be decrypted. However, the security of the encryption of 128 -bit AES is dependent on the implementation of the encryption; if it is incorrectly implemented, then there are also points of attack for encryption. The manufacturer Logitech wireless keyboards with their Unifying technology, where the manufacturer specifies a 128bit AES encryption were, for example, already been compromised due to a faulty implementation, these keyboards are thus uncertain, despite stated AES encryption.