any way to detect a device dropping on the ground?

[Andy Williams]

I saw an app on the play store that can alert (audio or torch) if it detects your device has fallen.  Serves as a quick prevention of losing your device.  I was wondering how to emulate something with Tasker.  I tried with shake contexts but it isn't sufficient.  Any ideas?

[Matt R]

Currently shake would be your only real option. If that doesn't work, I'd say it isn't possible with Tasker.

Matt

[Jay M]

I would of thought the sound of the screen shattering would be an alert lol. On a serious note tho I would love to no what app that is and how it works.

My G Note alerts me whenever my S pen is removed and I walk off leaving it behind (but that's obviously because the phone and the S pen have sum kind of connection) but im mega confused how what your trying to do will work because if you drop your phone its gunna fall straight down towards the floor (obviously unless your in space or summet) and then when it hits the deck its gunna bounce, which I guess would count as a shake/shakes which I bet tasker could pick up on but like you said that's not sufficient so the only other option I can think of is probably using the accelerometer but that's gunna be a real pain because every time you move the phone its gunna think it was dropped but I dunno I'm no developer and like I said im mega confused so with that said ima keep an eye on this thread and go surfing for this app you mentioned.

Jay M

On 30 Mar 2013 21:36, "Andy Williams" <jrdn...@gmail.com> wrote:

I saw an app on the play store that can alert (audio or torch) if it detects your device has fallen.  Serves as a quick prevention of losing your device.  I was wondering how to emulate something with Tasker.  I tried with shake contexts but it isn't sufficient.  Any ideas?

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[NikhilW]

One other possibility could be using pressure sensor if your device supports it..

[TomL]

atmospheric pressure difference over time? that's a terrible way to detect device being dropped.

what's the atmospheric pressure difference when the device is dropped 6 feet (2 meters)?

what about changes in air pressure when device is in a descending elevator?

[NikhilW]

Oh, forgive my ignorance. Seems I was wrong in imagining how it works.
I was referring to the sudden rise and sudden drop in pressure the impact will cause on the body of the phone. :-)

[TomL]

You're thinking accelerometer. That would show the shock of the impact against the ground.

Trouble is, the impact occurs in less than a second. Your app would need to be polling the accelerometer several times a second all day long in order to catch the impact shock. You'd drain your battery dry in no time, I'd say.

Tom

[Andy Williams]

Sorry for the delay, folks.  I remembered that I'd seen the app on android police but couldn't remember the name.  Just found it though.  It's called Ping Drop (that's a link to the Play Store app).  Anyways, prior to finding it I did do searches on the play store and found other apps using the accelerometer to detect if the person fell (for the elderly) and to notify an emergency contact.
Really, I don't know how it could be done with Tasker.  Tasker limits accelerometer to a shake & limits to choosing a particular direction (left to right, up/down, etc.)

It may prove to be a good exercise in getting it to work and, if it can be done, can it be battery friendly.

find a metric to determine a dropped phone
then briefly turn on torch & sound an alarm

or just buy the app & see if it works :P

[Andy Williams]

... further info
googled 'detect fallen phone' & there were a few university papers out there and, i'm guessing, the developer asking people how to do it on the interweb when I was looking.  sensitivity to changes in XYZ axis values.
http://stackoverflow.com/questions/7428232/determine-mans-falling-with-android-device
http://stackoverflow.com/questions/4848490/android-how-to-approach-fall-detection-algorithm
http://www.cse.ohio-state.edu/~xuan/papers/10_perhealth_dbysx.pdf
http://www.cis.umassd.edu/~xbai/pubs/J-FallDection.pdf

[Jay M]

Interesting app that like cheers for the link.

Jay M

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