On 02/06/2015 12:40 AM, Andreas Schildbach wrote:
> On 02/06/2015 01:36 AM, Eric Voskuil wrote:
> 
>> The main advantage of BLE over BT is that it uses much less power, with
>> a trade-off in lower bandwidth (100 kbps vs. 2 mbps). The BLE range can
>> be even greater and connection latency lower than BT. For payment
>> purposes the lower bandwidth isn't much of a hit.
> 
> I'm all for extending the BT:<mac> scheme to Bluetooth LE. If you have
> ideas how this can be done please let us know. I haven't had a chance to
> play around with LE because none of my devices support it.
> 
> I suspect the way how Bluetooth LE transfers files (like payment
> requests) is opening a plain old Bluetooth socket. If this is true, I'm
> afraid Bluetooth LE would not add anything for sending the BIP70
> messages back and forth. Note signed payment requests can easily be 4 kB
> in size, so speed *does* matter.

Hi Andreas,

I haven't expressed any preference for BLE, just answering questions
that were raised about it. The main thing that BLE brings to the table
is increased battery life, but with larger transfers that benefit is
reduced.

e