Validate scanner

Attempt to connect to the scanner via the stored wifi name. If a connection can be established, ensure that the scanner's product tag is in the system list of valid products.

Required

• The variable persistentValues/SCANNER_WIFI needs to exist, and contain the wifi name of the local scanner.

Effects

• Stores the scanner's connection information as temp/SCANNER
• Establishes scanner-connection

Function exits

• On success: The scanner could be reached and validated
• On product reg. error: The scanner is not enabled by the system, i.e. not in the list of valid products
• On generic error: A connection to the scanner could not be established