--- title: Connect external bar codes to user profiles for lead scanning description: This article explains how you can link an external, numerical badge bar code to an attendee profile in the app to allow scanning badges for lead tracking. --- [Skip to content](https://knowledge.conferencecompass.com/connect-external-bar-codes-to-user-profiles-for-lead-scanning#main-content) English Show submenu for translations ![floq-logo-by-cc-2-white@2x.png\]](https://knowledge.conferencecompass.com/hs-fs/hubfs/floq-logo-by-cc-2-white@2x.png?height=40&name=floq-logo-by-cc-2-white@2x.png) Open main navigation Close main navigation - English Show submenu for translations - www.conferencecompass.com www.conferencecompass.com Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [CC Knowledge Base](https://knowledge.conferencecompass.com/?hsLang=en) 2. [For organisers](https://knowledge.conferencecompass.com/for-organisers?hsLang=en) 3. [Advanced features](https://knowledge.conferencecompass.com/for-organisers?hsLang=en#advanced-features) # Connect external bar codes to user profiles for lead scanning ## This article explains how you can link an external badge bar code or QR code to an attendee profile in the app to allow scanning badges for lead tracking. ### Scan badge bar codes When an external badge bar code or QR code is linked to an attendee profile, scanning this code with the in-app QR code scanner will open the linked user profile. This makes lead scanning for exhbitors a breeze: they can just open the in-app scanner and scan the badge to add the attendees to their [leads dashboard](https://knowledge.conferencecompass.com/lead-tracking?hsLang=en), and they don't have to ask them to open the virtual business card in the app. Please note that you will need to use the in-app scanner to scan the badge. The device camera will not be able to make the link. ### How to link a badge bar code to an attendee profile A badge bar code can be linked to an attendee profile in 3 ways: manually, with an Excel import or through a channel. When linking manually, access the attendee list and open the attendee profile you want to link. Scroill down to the section *Event-specific info*. In the field *Bar code*, you can enter value that the badge bar code or QR code represents, such as 123456 or `abcd-123456`. ![](https://knowledge.conferencecompass.com/hs-fs/hubfs/image-png-Nov-10-2025-11-31-30-7015-AM.png?width=400&height=131&name=image-png-Nov-10-2025-11-31-30-7015-AM.png) When you want to add the bar code with an Excel import, just add a column `barcode` to the Excel sheet of attendees you're importing and add the codes in that field. When you have an attendee sync that has the bar code field in the API, we can map our bar code field to it. 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