A Wi–Fi transmitter is a device that broadcasts a signal across a wireless network. It operates in the 2.4 GHz or 5 GHz radio frequency range, sending data through antennas, which relay information to other Wi–Fi receivers. Most consumer Wi–Fi routers have built–in Wi–Fi transmitters, and many mobile devices have both transmitters and receivers. Wi–Fi transmitters are commonly used in homes, public areas such as coffee shops, casinos, and hotels, and many businesses.

SDBS stands for the Spectral Database for Organic Compounds. It is a Japanese database hosted by the National Institute of Advanced Industrial Science and Technology (AIST). It contains spectroscopic data including infrared (IR), nuclear magnetic resonance (NMR), and ultraviolet (UV) spectra of organic compounds. The database is used by researchers as a reference source to aid in the identification and characterization of organic compounds.

A dictionary attack is a type of cyber attack that uses a pre–arranged list of words to guess the user’s password. These words are typically found in a dictionary or a list of commonly used passwords. The attacker will try each word until they guess the right one, which can gain them access to the victim’s account. The attack is sometimes referred to as a “brute–force attack“, because it requires the attacker to try every single possible combination of characters until they crack the code.