A lot of people would listen to their friends and say that before they go home.

"Give me a word when you get home safely." "A lot of people will listen to their friends and say that before they go home," he said. But if you're as forgetful as I am, you'll probably forget about it when you get home, and your friend might worry a little bit.

Now, a Web application called Kitestring can help you solve the problem in a different way, letting your friends or family know you're home safe. Only by binding the mobile phone number on the Kitestring website and registering, the user can get account. After setting the time and date according to his travel plan and writing the contents of the Emergency SOS message, Kitestring will send a text message to confirm whether the user has arrived safely.

If the user fails to reply to the confirmation message within the specified time, kitestring will assume that the user is likely to have an emergency on the way and not be able to return home within a specified time. The application then sends a text message to the user's preset emergency contact, reminding them that the user may be in trouble.

What's even more interesting is that you can also set a "confirmation signal" and a "distress signal" only you know, in order to avoid bad guys replying to your confirmation message. If you send a "distress signal" to an application, the application will "pretend" you are safely home and tell your friend that you are likely to be in danger. Of course, in addition to the prescribed home time, users can always send text messages to kitestring to postpone the preset home time, or for help.

Of course, this application also has some drawbacks, if you because the cell phone is not power, or because of other unexpected circumstances can not reply to the confirmation message, it will default you are in danger, and send a warning message to the emergency contact, which is likely to make your friends or family startled. However, false positives are better than no one knows the dangers.

In fact, such applications are not uncommon, but kitestring is the first completely out of network data Web applications. This means that the service's opponent's system and mobile phone intelligence are not required, as long as the user's mobile phone can send text messages, you can use it. Although only English is currently supported, the service is already available in 217 countries (unfortunately China does not seem to be able to use, I registered for a half-day also did not receive the verification code).