This week, how do you contact emergency services when you can’t make a voice call?999 was introduced in 1937, 84 years ago, and it’s been voice-based ever since. Not only does this cause challenges for the deaf community, but there are also many situational reasons why making a voice call is unrealistic; from allergies and choking, to domestic violence and terror attacks.Talking to me today is Becca Hume, the founder of Tap SOS. Tap SOS is an emergency services app that enables users to inter...