While Amulet will recognise commands with no explicit prefix word, some users like to give their Amulet system a name such as "Computer" or "Henry". You can set this command word on the Settings screen, and then all commands you issue must start with that command -- for example, "Computer, Play Artist Madonna". If you use Amulet in particularly noisy environments, you may find that this helps Amulet to better recognize what you say.