Tutorial for checking the validity of the certificate by BB Barcode :
1. Open your BBM menu.
2. Click the BB symbol.
3. Click "invite to BBM" menu.
4. Click "scan a pin barcode" menu.
5. Click "start scanning" or "continue" menu.
6. Point your camera to barcode picture on the certificate.
7. Wait until "open link?" question showed up then click "yes".
8. Wait until the AGL certificate checking website open.
If the AGL certificate checking cannot be opened :
1. Click "browser"menu.
2. Click the BB symbol.
3. Click "setting" or "option" menu.
4. Uncheck the "Block Popups" menu.
5. Check the "enable javascript" menu.