hello, Vani!

how can I help you today?

hi Mark

I have a question regarding NFC

I need to write an app which can send and receive messages

kind of Peer to peer..

but dont want to do tap or beam for each msg send

is that possible with current Android NFC implementation?

it's not possible with any NFC implementation

NFC range is extremely short

contact is preferable

a centimeter might work

for P2P over longer ranges, use NFC to bootstrap some other form of communication, like WifiDirect

or possibly Bluetooth

both devices will be in contact.. ie., tap..

but I dont want to swipe each time like the beam app does..

oh

I have no idea if there is a way to do that

swipe or tap I guess on the phone ui

well,

the NDEF-based APIs won't support that, AFAIK

I dont know what to say

there might be something at lower levels

but I haven't tried any of that

as NDEF is what most developers would need and what meets my needs

well, we set on doing a pretty interesting app, and we kind of need NDEF to do that way..

but when we went for implementing .. didnt find a way..

the P2P kind of misleading in a way

all the NDEF-based APIs are focused on sending a single NDEF message with a fixed number of NDEF records

right..

and, AFAIK, won't send another message until things are moved out of range and back together again

thank you for confirming my understanding

Is it possible for you to give me some direction?

north!

we are not very particular on NDEF.. it is good to have.. but

:)

sorry, bad joke -- go ahead

The idea is to have few commands and responses exchanged

between two NFC enabled devices, so one of the device goes and finishes the job..

but to do that, with current implementation it needs going back and forth contact and taps

we assumed, P2P will work for us, and decided to do that way, with NDEF.. etc

but got blocked as the Android NDEF/BEAM doesnt work that way..

I came across one blog about Host card emulation sample, and using the enableReadermode() apis

but not sure if we can do in our context.

that is what I meant by "lower levels"

and I have not played with any of that, sorry

will you be interested to play with them?

it's not high on my priority list

By any chance do you know if Google planning to add this support?

I know very little about what Google is planning regarding anything :-)

that being said, Google has previously suggested the bootstrap model I mentioned at the outset

in fact, Android Beam does that for you, which is why you can pull the devices apart and still transfer

it's transferring over Bluetooth

using NFC for any act that takes more than a couple of seconds likely will be considered aggravating by users, who basically cannot move while the NFC work is going on

hence, I will be surprised if Google emphasizes long-duration NFC transfers in the future

but, I cannot say whether they will or they will not

that is not possible for us, due to other constraints, one of the devices in question doesnt support the BT

I presume that is custom hardware, as I cannot think of any mainstream Android device that has NFC and not Bluetooth

yes, second device is not android

OK

that is part of the reason I do not have host card emulation high on my list -- I think you need specialized hardware on one side of the communications

hmm

and I spend enough money on hardware as it is... :-)

okay, would it be okay if I come back to you on next chat with more info..

sure

Thank you for confirming about the NDEF and single message transfer

you are very welcome

I will talk to you next week then..

Have a nice evening..

you too!

thanks, bye

that's a wrap for today's chat

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