The sites do tend to be closed loops with access by recommendation only
i.e. you have to "know" someone to get access
Others you simply have to have a ticket business to join and you get access to a site that shows a "shared inventory" from other touts
Effectively an online trading room amongst touts
The software is a different matter
It is possible to adapt certain types of software to revisit websites regularly without too much trouble
However, the custom coded stuff that is again only disseminated amongst touts is much more interesting
The biggest insight into that was the Wiseguys case in the USA where bots, or background processes to give them their full name, were preloaded with credit card details and set to target specific ticket releases at certain times
So if an on sale occurred at 9 am on a Friday morning you would set the bots to start hitting the site a very very short time before
You can even preset some stuff to look for specific tickets in the primaries inventory and keep dipping in and out of the system until it gets the tickets that you want
Thats at the larger end of the problem
At the smaller end I have actually seen evidence of 8 completed separate ticket purchases from a single IP address from a single computer in under 2 minutes
This type of software has always been the elephant in the room
Primaries have consistently denied it was a problem, or, in some cases that it even happens!
That was until the Wiseguys case blew the lid off of the issue
It also explains why primary ticket agents systems hang milliseconds after tickets go on sale
If their system is hit by automated requests that quickly, the sheer volume of requests ends up having the same effect as a denial of service attack and the connection drops or the system hangs
And thats why the public have little, if any, chance of getting the best seats when tickets go on sale
Fingers cannot type anywhere near as fast as a software can send data
Bought tickets for Sydney show Fleetwood mac. Got sent an email with the total cost, which was $120 cheaper than what viagogo charged to my credit card. Not only was the money taken out of my account ... more