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I used a USB-6001 DAQ unit for a Quiz Buzzer game that worked down to an accuracy of 1ms - great no problems . However having to wire up all the buzzers (up to 13) each time was becoming a pain and it doesn't scale very well, so I was looking at using tablets (probably Android based) to transmit over WiFi a virtual buzzer press. But then of course you have all the latencies etc. of the TCP/IP packets to contend with. I was wondering if it was possible to use the IEEE 1588-2008 standard (Precision time protocol over ethernet) to get similar accuracies - even up to about 20ms accuracy would be OK over a standard WiFi connection? I was thinking you can send a master clock signal (eg. using someting like the JJ Control uS Clock) from a central LabVIEW server application to all the Clients (Tablets) up to 10 times per second as per the standard to keep clocks synchronised. I had a look, but couldn't find a IEEE 1588-2008 LabVIEW toolkit - is there one available? If not is there a simple way of achieving this? Thanks Chris