Barcodes can be generated in ETO using these three formats:
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Formula for Activity (Point of Service) Barcodes:
="*A"+FormatNumber([Point of Service Unique Identifier];"#########")+"*"
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Formula for Group Barcodes:
="*G"+FormatNumber([Group Unique Identifier];"#########")+"*"
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Formula for Participant Barcodes:
="*P"+FormatNumber([Participant Site Identifier];"#########")+"*"

 
In order to get the barcodes to display properly in the tables of your ETO Results report, you’ll have to use the font "IDAutomationHC39M", and you may have to increase the size of the font.