ROCKVILLE, MD Construction workers in the field can now instantly access safety procedures, checklists, emergency contacts and other vital documents on their smartphones. The feature was recently added to Credential Verification Service's scannable employee ID cards.

The employee just scans his own ID card or any coworker's badge with a smartphone, and a list of key documents appears on the screen. Any document is instantly visible with one tap of the "view" button.

"This eliminates scrambling to find a critical piece of information, removing another time-eater," said CVS president David Finkelstein.

Each card has a QR code that when scanned links the worker's smartphone to essential documents. Documents can be added or modified at any time, ensuring that up-to-date information is always shown.

"No employee will ever again have the excuse that they didn't know about a particular policy, couldn't find a specific document or didn't know whom to call in an emergency," Finkelstein said. The service is free for CVS clients.