Abstract: Illustrated is a system and method for an inductive signal interface used inductively receive electrical power and account data from a mobile computing device, the account data to include an account limit and an account balance. The system and method may also include a battery to store the electrical power. The system and method to use a processor to be powered by the battery and to identify an indication value, the indication value as a difference between the account limit and account balance. The system and method may also use a balance display to display the indication value as a remainder indication.