Help Lollipop smartlock + bluetooth dongle on power outlet?

[fdisk]

Hi

I got a Moto X 2014 and updated to lollipop.
I used to use the Tasker app to disable PIN lock when I was connected to my home network, but this apparently doesn't work well anymore, so I'm considering adapting to the "smartlock" feature, which doesn't support wifi for now.
I tried the NFC trusted device, but it doesn't have an "acceptable delay" (ie, I can unlock my phone touching the NFC, but if I leave it on top of the NFC tag, then grab it on my hand for a few seconds and try to unlock, it doesn't work).
So my best idea for now would be to plug and USB bluetooth dongle to an USB power outlet and use that as a trusted device.
Since I don't have an USB bluetooth dongle, I'm not sure:
1) It can be connected to "USB power" (ie, not a device like a PC/laptop) and still broadcasts its bluetooth functionality
2) Android will accept it even if it does

does anyone know or have a better idea?

thanks

 

[fdisk]

bump

 

[Crashdamage]

1. No. The dongle must be plugged into a PC or something that loads bluetooth drivers and software.
2. For the dongle to be used as you intend it must be functional and discoverable.

 

[codesplice]

Have you considered using the Trusted Places piece of the Smart Unlock options? That's what I use to make sure my phone stays unlocked when I'm at home, and it works quite well.

 

[fdisk]

thanks for the answers!
I considered using the unlock by places, but I think it's a bit unsafe (or maybe I'm a bit paranoid )

I'm thinking about some cheap (and low energy consumption) bluetooth standalone device that I could use just for the broadcast
any suggestions?

Edit: ideally I'd like to use wifi, but I guess this won't be available soon

 

[fdisk]

well, nevermind
I just remembered I use a raspberry pi as media center, so I'll plug the bluetooth dongle in it

 

[Slug]

If you root the handset and install the Xposed Installer, there's a module available (No Lock Home) that allows you to disable the lockscreen when connected to specified wifi APs, BT devices etc.

I use it myself as I'm running 4.4.4.