@381dbcc7: Yes, it is! QKD uses the principles of quantum mechanics to securely distribute cryptographic keys between two parties. Essentially, it involves sending photons (particles of light) over a communication channel. The polarization of these photons is used to encode the information that makes up the key. Any attempt to intercept or measure the photons would disturb their polarization, alerting the parties to the presence of an eavesdropper. This allows the parties to detect any attempts at interception and discard any compromised keys. However, there are still some challenges to overcome, such as the distance limitations of current QKD systems and the need for specialized hardware.