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Show HN: TT911 – Text 911 your location and name without unlocking your phone

31 points| osipovas | 11 years ago |smsto911.com | reply

32 comments

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[+] ksenzee|11 years ago|reply
My toddler is going to love this app. He can order up flashing blue lights and a siren any time he wants!
[+] osipovas|11 years ago|reply
We built the app to enable users to text 911 dispatchers their exact location and name at the right time — without unlocking their phone.

Earlier this year we saw Text-to-911 launch in several areas around the country with the effort to improve public safety.

It works wherever text to 911 is available (predominantly Chicago, Dallas, Indiana, Maine, and Vermont).

We would love your feedback and thoughts.

[+] BuildTheRobots|11 years ago|reply
With feature phones it was possible to dial <emergency> by feel, without removing the phone from my pocket (or making it obvious what I was doing). I'd love to be able to fire off an emergency SMS without having to expose my phone or having to use the touch screen.

In my head I'd love to be able to morse-code SOS on the volume keys as a trigger. Possibly once on the v-down, phone vibrates and then again on the up to stop accidents.

I wonder if the UK can accept SMS messages on it's 999 or 111 service... love the app though :)

[+] fidlefodl|11 years ago|reply
I like it, but i'd be too afraid of accidental button clicks to install it. (May not be safe, but it is what it is)
[+] piptastic|11 years ago|reply
When the location isn't available, and they try to use it and you state that it isn't available...

Can you at that point have an option to initiate a call to 911 (through a locked screen)? I'm not familiar with android development.

[+] afreak|11 years ago|reply
OK. So here is a question that is bothering me: how did you test this? How did you ensure that this application will reach the 911 SMS service?
[+] Fletch911|11 years ago|reply
Testing to 911 can be established by contacting them on the NON EMERGENCY NUMBER, and requesting to speak to whomever is in charge of test requests. They will tell you the policy and guidelines for that agency. This was NOT designed for general public testing of the Text service, and you could easily overload the center when an event is happening.

Don't guess, play it safe, but remember, if too many people start to test before a policy is set up, you are going to have a negative impact on the workload of the center, and they will discontinue the service. Not good for anyone.

[+] Igglyboo|11 years ago|reply
They probably don't have to actually test it very much, the actual sms should be handled by the api which wouldn't be tested by them. Other than that they could just alert the 911 service that they are doing some testing during a certain period of time.
[+] osipovas|11 years ago|reply
If Text to 911 is not available in your area you get a bounce back message from your carrier.

The FCC website has more information about TT911 here: http://www.fcc.gov/text-to-911

[+] brandon272|11 years ago|reply
How does this app find a "specific address" to send, as the website describes it? What guarantee is there that it doesn't send the cops to my neighbor's address?
[+] osipovas|11 years ago|reply
We use a reverse geocoding service. The goal is to provide an address that is close to you (within 50 or so metres) which is better than the alternative of what responders currently get when you call and do not know your location.

Within the app itself you can move the pin (a la Uber/Lyft style to update the address) you want to send.

Here is a bit on the current status of Wireless Enhanced 911

http://en.wikipedia.org/wiki/E911#Wireless_enhanced_911

[+] Fletch911|11 years ago|reply
Cellular phones can use several technologies that can assist in providing and X,Y coordinate of the device. These can be extremely accurate, depending on the data available. Look on Wiki for 'SkyHook'. This information is NOT available to 911 on phone calls, nor dopes a data channel exist to even transmit the data from the device to the 911 center. This is why the App is useful, but the App, needs to talk to something on the 911 center side. Without that piece, there is no way to get the information from point A to point B.
[+] jaimani|11 years ago|reply
For what it's worth, according to FCC data, 9 out of 10 wireless 911 calls don't have accurate location info, so it sounds like this service could be pretty useful: http://arstechnica.com/business/2014/07/9-out-of-10-wireless...
[+] Fletch911|11 years ago|reply
This is based on a report by FindMe911.org and it is specifically talking about issues in the Washington DC area based on data obtained from a FOIA (Freedom of Information Act) filing by that group. It is not to mean that this is the condition all over, while I will admit there is a problem with cellular phone location as the GPS signal is seriously disrupted inside of buildings due to the lack of Line of Site.

Yes, this is a problem, but this 90% error rate is based on statistical data from a particular area.

[+] gioele|11 years ago|reply
Have you thought of accidental calls?

Cellphones used to have similar emergency buttons. People sitting on their phones caused too many calls and these buttons have now disappeared. [1]

[1] https://en.wikipedia.org/wiki/Pocket_dialing

[+] osipovas|11 years ago|reply
We certainly have though about accidental calls. That's why we implemented a double tap (with a timeout) as well as a countdown where the user is able to cancel. False alarms are definitely something we're keeping our eyes on.
[+] dragonwriter|11 years ago|reply
It requires multiple actions, not a single press, and smartphones still have emergency-call-without-unlock functionality (at least, my Galaxy Note 3 does) like the emergency-text-without-unlock this system provides.

Sure, the old one-button emergency call feature is gone because of excessive accidental calls, but that's not what this is (even substituting "text" for "call".)