In Case of Emergency (ICE) is a program that encourages people to enter emergency contacts in their cell phone address book under the name "ICE". This enables first responders, (paramedics, firefighters, police officers, and of course NGO security officers) to quickly search an unresponsive victims phone for the ICE contact who can identify the victim, provide emergency medical information, and next of kin details.
Of course this is not a panacea. It comes with the usual caveat; you'll need to adapt the system to your local context and your organization's methodologies. For instance it might not be appropriate in Afghanistan where Taliban supporters have been known to search the phones of passers by for foreign names. However, with a little bit of adjustment you should be able to use this idea to help ensure the safety and security of your staff.
If you want additional videos like the one above W. David Stephenson has done a number of videos at least one of which I have used before. You can find out more at his website or at his YouTube channel. Don't be put off by the Homeland Security 2.0 label he uses. His short videos are intended help empower ordinary people during times of emergency or disaster.