Frequency Hopping Spread Spectrum (FHSS) is a wireless communication technique that rapidly switches the carrier frequency among many frequency channels. This method helps to minimize interference and improve security by making it difficult for eavesdroppers to intercept the signal. In FHSS, the transmitter and receiver synchronize their frequency changes, hopping to predetermined frequencies in a specific sequence. This allows for efficient use of the available bandwidth and reduces the likelihood of signal disruption from other devices operating on the same frequencies. FHSS is commonly used in technologies like Bluetooth and some military communications.