What is what kind of lead retrieval devices are there?

1. Barcode Scanners: These devices scan the barcode on attendee badges and capture their contact information. They are portable and easy to use, and can store large amounts of data.

2. RFID Technology: These devices use radio waves to identify and track attendees. They require an RFID tag or badge that contains the attendee's contact information. The information can be easily retrieved using an RFID scanner.

3. Mobile Apps: Some lead retrieval systems offer mobile apps that allow exhibitors to capture and store attendee contact information on their smartphones or tablets. These apps typically use QR codes or NFC technology.

4. Badge Printing: Some systems allow exhibitors to print out custom badges for each attendee they meet. The badges contain contact information that can be easily scanned or entered into a database.

5. Manual Entry: In some cases, exhibitors may need to manually enter attendee contact information into a system. This may be done using a keyboard or touchscreen device. This method can be time-consuming, but it is still an option for exhibitors who do not have access to other lead retrieval devices.