If you want to see how far technology has come with emergency communication and notification capabilities, look no further than Virginia Tech, a university campus that experienced two shooting events.

Speco’s Mass Alert Notification is ideal for schools, workplaces, venues and events where people gather. With their cellphones, every person can opt-in to receive emergency alerts in the form of text messages by texting a pre-defined keyword to a short code provided by the facility.

Kastle Systems International’s KastleAlert is a mobile, crowdsourced emergency mass communications platform.

SecuraTrac, a provider of mobile health and safety solutions focused on senior safety, employee well-being and the healthcare industry, announces its MobileDefender Model S (MD-S) is now integrated into the EMERgency24 Mass Notification system. Users of EMERgency24 will now have new channels of communication during an emergency via the MD-S device.