I don't think the pocket full of stealth RFIDs is actually all that great a of a tactic. It only works if the Security Spider or enemy decker your up against has no idea what they are looking for. If they are just wondering "hey are there any hidden icons around?" and see 100 show up, they will know something is up. If they know where you are, and that you have a gun in your hand, they can actually look for the hidden gun icon
specifically. Worse, once they spot any one of the tags, if it's within 100 meters, they have a general idea of where it is because device icons, unlike personas, stick to their physical location in the matrix. If they get two marks on it (easy vs an RFID) they can even trace it and know where it is anywhere it goes on the planet as long as the marks remain. A pocket full of RFID tags isn't cheese, it's a serious liability. Using wrapper to make them look like something more interesting might extend the amount of time it takes the security spider to realize it's not worth bricking, but he's likely to use it to locate you before trying to damage or hack it further.
Now add in that Radio Signal Scanner sensor systems aren't that uncommon, and walking around with a bunch of stealth RFIDs is a really bad idea on a run as it's likely to announce "Hey there is something going on in here" the second you come near a security sensor. It's the same reason Shadowrunners have been burning all the RFIDs out of their gear, clothing, and food since 4th edition.
It does, however, have some possible uses for a distraction. If you think you're going to get caught in a facility anyway, placing some decoy tags in a room you aren't in is a good way to distract a Spider for a few actions, especially if they don't look like RFID tags thanks to a wrapper. The idea of tagging a bunch of vermin, and releasing them into a complex would work well, for example, as does using a Skimmer drone with wrapper running in order to make it look like an active Chameleon Suit. It's not cheese, it's a valid decoy/distraction tactic. Hell, 4th edition had multiple "distraction drones" designed to this kind of thing. It's the matrix equivalent of setting of charges on the side of the building you
aren't trying to break into. Using it keeps the security forces from knowing where to look, but (because
everything has it's price) it does tell the security team that they are under attack... which is often a bad thing even if they don't know where to respond to. Suddenly the doors in high value areas are locked down, security drones are activated, guards start paying more attention, etc.
QUOTE (GiraffeShaman @ Jul 18 2013, 10:42 AM)

Assuming they've thought of, heard of, or run across this tactic before, how can security managers and spiders respond? Some kind of screening perhaps that sorts such out automatically?
Radio Signal Scanners are a cheap enough security sensor. If your employees walk past one as they enter or leave the building, it will spot the RFID chips on them, and once a chip is spotted, it remains that way unless it takes a Hide matrix action. In short, if a bunch of your employees walk in from lunch with Stealth RFID tags in their stomach, security will see it immediately. Stealth RFID tags in the stomach might not even raise eyebrows, but if the tags are under a Wrapper effect so they look like guns, B&E gear, etc... it would certainly get a response from the security guards, but they'll be catching it at the front door, not running all over the inside of the building looking for the tags.