EDIT: Although maybe you're right, if the "gamblers" deposited funds to the casino via wire, direct from the fed, and then exchanged them for chips. So the casinos should presumably have some record of who came to claim that wire in chips.
Chips can be flagged or invalidated by serial number.
[1] http://singularityhub.com/2011/02/12/1-5m-robbery-of-bellagi... [2] http://www.cnbc.com/2014/04/16/cheaters-may-speed-need-for-p... [3] http://www.gpigaming.com/rfid-technology/rfid-in-casino-chip...
Casinos have cameras at the cage, and beyond that cash transactions in a casino have the same reportability as cash transactions everywhere. If it's in the US that means IRS paperwork at $10k. I have no idea what the limits are in the Philippines, but I'll bet they have video of the people who collected the money.
Typical player tracking is done through comp cards, where they account for your buy-ins at the table, and buy out at the cashier.
and how would casino be laundering money then? :)
they do need plausible lack of total control and accounting of all chips' movements.
Do you have evidence for this? I find it rather plausible that casinos have anti-fraud measures built into their chips to allow tracking of where each chip came from.
EDIT: A quick google shows this is indeed the case for some casinos at least: http://singularityhub.com/2011/02/12/1-5m-robbery-of-bellagi...
PS: In the US the government requires casino's to track large winnings for the IRS they hand out W9's.
The best way to legally launder money is to use a casino. You bring in your dirty money, exchange it for chips. Then sit on your chips for a week, maybe a month, then go back and cash out your chips for clean money.
Meanwhile, all the cash you moved through the casino is now scattered to some 50-100 different banks as it gets deposited in their daily drops and then transferred as necessary between the banks. In a few weeks, the dirty money is albeit untraceable.
You showed up with lets say $50k at the casino, you departed with the same $50k. If you'll be investigated, you still can't justify the money you walked in with.
CA2, CA3 and CA4 come into the casino a few different times over several months, gamble for while for a net zero gain or loss, and then convert their "winnings" from chips into cash in chunks of $5k or so - flying under the radar.
C1 never needs to come back to the casino where the police might catch him - and he is the only one who is linked to the big heist.
If the casino isn't involved in the scheme, how can a thief take that $100M, using chips or not?