Socket Mobile 3E - Manual (Page 39)

4. Position the scanner at an angle — No bar code scanner works well
when positioned exactly perpendicular to the target bar code label,
because the reflected light tends to “blind” the sensing mechanism. For
best results, position the scanner at least 15 degrees away from the
perpendicular to the surface of the bar code.
5. Experiment with different techniques and conditions — The more you
experiment with different techniques, lighting conditions, scanning
distances and positions, the more proficient you will become.
Conclusion
Socket’s SD Scan Card 3E is a convenient and affordable bar code
scanning accessory for your mobile device, and with a little
experimentation and practice, the performance will approach that of the
larger and more expensive laser-based CompactFlash In-Hand Scan Card.
APPENDIX E: TIPS FOR BETTER SCANNING | 39