StreetPass Relay Points work by storing StreetPass data they receive from 3DS' (system version 6.2.0-xU or higher) that are in sleep mode. They then send out the data (like the 3DS would), until the next 3DS comes and receives the data. When the data sent by the relay is received, it takes in the receiver's StreetPass data and begins sending that data instead. However, because of how it works the first person to go to the relay station will not receive StreetPass data, since it hasn't gathered any StreetPass data yet.