Changes

|  0x01

|  0x01

|  0x01

|  0x01

|  '''Unknown'''

|  '''StreetPass Service Length'''

|  Seems to vary by device, but stays consistent and doesn't change between Street Passes. May be a length or counter field in relation to the next set of fields. Removal of a service caused the value in the field to decrease.

|  Length in bytes of only the StreetPass Services field.

|  05

|  05

|-

|-

Appears to represent a protocol version, or device identification. This field remains consistent on all devices, despite variable enabled StreetPass services or length of the tag. Could also represent region.

Appears to represent a protocol version, or device identification. This field remains consistent on all devices, despite variable enabled StreetPass services or length of the tag. Could also represent region.

==== Unknown Field ====

==== StreetPass Service Length ====

As mentioned, possibly a length field for the StreetPass services.

This field is used to indicate the length of the variable length StreetPass Services field. Removing and adding services has shown this field to increment and decrement in 5 bytes, or 11 bytes depending on the game. The StreetPass Services field has then expanded or reduced accordingly.

==== StreetPass Services ====

==== StreetPass Services ====