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i have a fingerprint reader device for pc but now i want to connect that fingerprint reader to my android mobile ?anyone help me which is the usb connector for this???
The USB connector is the least of your worries - IMO the real problem will be kernel drivers to interface with the hardware and userland software to interface with the drivers.
Are you planning to write the driver yourself? Otherwise, I don't think it's supported out of the box.
If so, you'll need to find the specifications and protocol for your device, and implement them to work with the kernel Android is using (so probably the Android SDK reference will be useful, perhaps even Linux Kernel Documentation might be useful). Note that this is no easy task even when all the specifications are available - woe betide you if there's no published spec to the reader, as you'd have to reverse-engineer the functionality from the Windows driver.
In closing: despite great developments in the past decade, we're still light-years away from truly plug-and-play devices: especially devices made for desktop computers don't interoperate well with other (e.g. mobile) platforms.
What do you think will happen if you'd be able to connect your finger print reader to your device?
I can tell you what will happen. Nothing. Android does not support finger print reading.
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To be a bit more specific to my case, I'm new to Android development, and I want an Android phone to properly test apps on. This phone would only be used for development, since I already have an iPhone for general use.
It only needs to be powerful enough to test small apps and 2D/3D games (I will likely upgrade in the future). My computer is pretty good, so I don't need to worry about my computer specs.
I'm not asking "which phone should I get", I already have one specific phone I want to buy, since it's on sale. I'm just unsure if it will be powerful enough. For reference, this is the phone I'm looking at: https://www.thinkofus.com.au/zte-shout-blade-a110-4g-unlocked-900-2100-3g-white
Any answers are appreciated.
Lots of people will downvote this answer but still, I will tell you that the device depends on the type of app you are building and the features you want in the app. If you are building a selfie camera app, the device needs to have a front-facing camera or if your app uses NFC the device needs NFC support. From the software point, you need to look at the Android version to see if the feature you want to develop is supported in your device. Low end device will be helpful in making a better app as you would have to worry about memory and CPU constraints, But I would suggest getting 2-3 devices of various types
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Closed 9 years ago.
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after I rooted a Nexus 10 the app I have written which connects to an Arduino in USB Host mode no longer works properly. I'm pretty sure this is because the USB Host mode is no longer available.
I have checked the original unrooted device with Chainfire's 'USB Host Diagnostics' tool and it recognises the plugged in Arduino whilst scanning for connected devices, but nothing is detected after rooting.
Originally the device had Android 4.3 - build JWR66Y, and USB Host mode worked.
I rooted via the Nexus Root Toolkit and installed a rooted image of the same build, now the device isn't detected.
Any ideas what could be causing this?
Thanks
This is not a question of your app not working. I have seen it plenty of times that when someone roots a device the USB host no longer works. Its a problem with the ROM or method that was used to root the device. Best bet is to reset the device and try something else.
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I've a car stereo (Pioneer AppRadio2) that seems to have a ROM tha contains WindowsCE for MIPS.
Would it be possible to run Linux/Andriod on the device by flashing a linux type ROM to the device ?
If it is possible what would be the high level steps that need to be done to achieve this ?
Pioneer does have a mobile developer web site for AppRadio, but it isn't live yet, so it looks like Pioneer won't be an immediate help.
You need to determine if the bootloader is locked by some sort of digital signature or not. If it is digitally signed and locked, you're going to have to either obtain a key from Pioneer or reverse engineer it.
Following that, use an embedded toolkit like OpenEmbedded to create a Linux environment on the device.
That wont be so easy. Actually it is meant to be a control station for android and iphone devices. so you could just use the android kit for your phone and control it from your appradio2 as for now. I know youre radio wouldnt be running the android itself but would display it and control it.
since it is quite new it will take some time for developers to "hack" it if it is possible. i have seen bounties on xda for example from people that would like what you are asking and other things.
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I want to connect several usb devices to my Android tablet, using a usb hub.
Does android supports such a thing?
If it does, from what version?
Thanks!
This depends on things other than the version of android.
First the tablet hardware must support USB host functionality. By this I mean that the tablet must be able to power external devices per the USB standard.
If your tablet fits this bill, Android 2.3.1 and newer are known to have this functionality built in. This doesn't mean that an older version of Android hasn't been modified by the OEM, or can't be modified by you, to support the functionality.
I needed to connect a usb camera to my tablet.
I found that I need to have some extra support from my kernel than what I have.
The kernel needs to support V4L2 in order to get data from the camera. The whole process is made threw jni.
There was no problem working with 2 devices using a hub.
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I hope I'm allowed to ask this non-programming related question here on StackOverflow. If not, I'm sorry...
Anyways, I bought a Samsung Galaxy S2 (running android 2.3.3) and have been reading up on rooting the device. What benefits do you get if you root your android device?
I'm quite in the dark about this still...
You have access to alter any system files, use themes, change boot images, delete annoying stock apps, such as Sprint's NFL Mobile live and Nascar Sprint Cup Mobile, and other various native applications that might drive you crazy (Footprints, Voice Dialer, etc).
There is plenty of information on the web on how to accomplish this, but our favorite way is by using Titanium Backup and freezing/deleting the apps from there (root required, of course).
On most rooted Android devices, you can back up your entire system to an SD card, much in the same way you can image a hard drive. This is great if you’d like to try a new ROM, as you can back up your phone, wipe it completely, flash the new ROM, and if you don’t like it, just restore from your backup to get your device back to exactly how it was before you wiped it.
Read the complete post Rooting Explained + Top 5 Benefits Of Rooting Your Android Phone