[hackpgh-discuss] Re: RFID timeclock
- From: Matt Stultz <matt@xxxxxxxxxxxxxxxxxx>
- To: hackpgh-discuss <hackpgh-discuss@xxxxxxxxxxxxx>
- Date: Tue, 3 Mar 2015 17:18:01 -0500
I would find it hard to believe that there is no "kiosk" mode for android
where you tell it to start an app on startup and not lock the screen. Oh
wait, quick google search provides this:
http://sdgsystems.com/blog/implementing-kiosk-mode-android-part-1/
Thanks,
Matt
On Tue, Mar 3, 2015 at 5:04 PM, Joseph Ates <joey@xxxxxxxxxxxxxx> wrote:
> Hi Anthony!
>
> Yeah. I think scanning NFC from android apps is a no go situation under
> lock screen conditions. That being said, there's a developer option to keep
> the screen awake when connected to usb (or usb power sources) which would
> be ideal for the "clock" tablet.
>
> USB would of course be cool as well. As an aside, I also think it would be
> cool if one could leverage the android accessory USB protocol/interface as
> a NFC reader to a tablet as the accessory in the standard can double as a
> 500mA power source. [1] I think there's even an arduino mega[2] designed
> for use as an android accessory, so all it'd need is an NFC reader shield.
>
>
> [1] https://source.android.com/accessories/protocol.html
>
> [2] http://developer.android.com/tools/adk/adk.html
>
>
> On Tue, Mar 3, 2015 at 4:00 PM, Anthony Cascone <ajc317@xxxxxxxxx> wrote:
>
>> Dude, you're alive.
>>
>> NFC makes sense for the reasons you pointed out.
>>
>> Personally, I'm not an app developer and would rather avoid it, but could
>> make sense. At tablet would be cool because of the built in display, but
>> there would be details like would the app have to be active to receive the
>> NFC. If you had to wakeup the tablet every time to wanted to punch in/out
>> you might as well drop the NFC aspect. All that said, there may be an app
>> for that... again, I'd look before you build something.
>>
>> There are USB NFC interfaces too. Just saying.
>>
>> On Tue, Mar 3, 2015 at 3:49 PM, Joseph Ates <joey@xxxxxxxxxxxxxx> wrote:
>>
>>> To be honest, I think NFC is a bit more accessible to do this kind of
>>> application considering it's in the back of most android/windows smart
>>> phones. You could use a Nexus tablet as the "clock" and have employees use
>>> their smartphones to scan past it. You could also issue small cards with
>>> embedded NFC tags for those employees who don't have smartphones.
>>>
>>> On Tue, Mar 3, 2015 at 2:03 PM, Anthony Cascone <ajc317@xxxxxxxxx>
>>> wrote:
>>>
>>>> I'm not aware of any projects that currently exist that you could just
>>>> copy and past, but I'll be honest, I didn't bother searching at all. I'll
>>>> leave that to you.
>>>>
>>>> In its most basic form, you'll need an RFID reader, tags, and some sort
>>>> of computer. Depending on how you want it set up, you could use your own
>>>> computer, or get a dedicated system. A RaspberryPi would be more than
>>>> sufficient if you want a dedicated, low power, portable system. Regardless,
>>>> of the computer, for ease of integration, I would recommend a USB enabled
>>>> RFID reader. That can be fairly cheap if only need it to operate indoors.
>>>> Parallax has one I think. If you needed it our doors, you'll have to pay
>>>> more or you a mixture of parts to get it to play nice with a computer.
>>>>
>>>> Once you have the reader, you'll need something to listen to the reader
>>>> on the computer, and then log the time/date that the tag was read. From
>>>> there, it's up to you on how the data is displayed.
>>>>
>>>> I have a feeling that such a project might already exist, but it
>>>> shouldn't be too hard to whip something up.
>>>>
>>>> On Fri, Feb 27, 2015 at 5:37 PM, Chris Williams <cwilliams2@xxxxxxxxx>
>>>> wrote:
>>>>
>>>>> Please forgive my lack of clarity.
>>>>>
>>>>> Anthony's explanation most accurately described the goal. The RFID tag
>>>>> will be the timecard for the timeclock. The tag will initiate when a
>>>>> person
>>>>> has clocked in and out. In addition, I want to create a log with
>>>>> timestamps.
>>>>>
>>>>> -Chris
>>>>>
>>>>>
>>>>>
>>>>> On Friday, February 27, 2015, Anthony Cascone <ajc317@xxxxxxxxx>
>>>>> wrote:
>>>>>
>>>>>> While we are playing the guessing game. I suspect he means a time
>>>>>> tracking system using RFID tags to "punch in" and out.
>>>>>>
>>>>>> A device that generated tag IDs that corresponded to the current time
>>>>>> would be an interesting project though.
>>>>>>
>>>>>> Regardless, additional details would help to understand the scope.
>>>>>>
>>>>>> On Fri, Feb 27, 2015 at 10:07 AM, Yevgeniy Soroka <
>>>>>> ukranians2@xxxxxxxxx> wrote:
>>>>>>
>>>>>>> I suspect he means an RFID chip which transmits the time when you
>>>>>>> scan it?
>>>>>>> -Geno
>>>>>>>
>>>>>>> On Fri, Feb 27, 2015 at 10:00 AM, Tim Cannon <timmycninja@xxxxxxxxx>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> start by explaining what you mean, RFID is usually passive and
>>>>>>>> simply transmits an ID over low frequency radio.
>>>>>>>>
>>>>>>>> On Fri, Feb 27, 2015 at 9:33 AM Chris Williams <
>>>>>>>> cwilliams2@xxxxxxxxx> wrote:
>>>>>>>>
>>>>>>>>> Dear Hack Pittsburgh,
>>>>>>>>>
>>>>>>>>> I am interested in learning how to develop an RFID timeclock. Chad
>>>>>>>>> suggested that I ask the group.
>>>>>>>>>
>>>>>>>>> Where is a good place to start?
>>>>>>>>>
>>>>>>>>> Thanks!
>>>>>>>>>
>>>>>>>>> -Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>
>>>>
>>>
>>
>
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