TSA PreCheck "Random" Extra Screening?
#136
Join Date: Jul 2010
Location: California. USA
Posts: 1,404
#138
Join Date: Jan 2014
Location: FRA
Programs: AA LT GLD
Posts: 860
#139
Join Date: Nov 2013
Location: PHL
Programs: AA - Platinum, HHonors - Diamond, IHG - Plat, Marriott - Gold, National - Executive, NEXUS
Posts: 1,062
Same here. I find it ironic that I can wear my shoes and belt through the WTMD, through the MMW, but have to take them off to be scanned if I opt out from my 'random'.
Today I get the full monty as I got my biannual random PC miss.
Today I get the full monty as I got my biannual random PC miss.
#140
#141
Join Date: Nov 2010
Posts: 510
Can anyone verify that you are still able to opt-out when you get the random beep with Precheck? My brother told me that they didn't give him the option to opt-out but he also didn't escalate this. I would appreciate any information that people may have regarding this.
#142
Join Date: Nov 2013
Location: PHL
Programs: AA - Platinum, HHonors - Diamond, IHG - Plat, Marriott - Gold, National - Executive, NEXUS
Posts: 1,062
I have opted out each time I have been randomized by the WTMD. Shoes & belt go through the baggage x-ray and a standard opt-out pat down is given.
#143
Join Date: Oct 2015
Location: EUG
Programs: BonVoy Au, IHG Au, HH Au, Nexus, Pilot FlyingJ Preferred, *$ Au
Posts: 4,942
I opted out with no issues in DEN in May. Got the random beep at SFO Terminal 4 yesterday and was already saying opt out when I realized there were no rapiscanners nearby for the Pre line. They did a very perfunctory pat down, not like when I opted out in the International Terminal without pre at the start of my trip.
If your brother isn't comfortable or pressed for time, just ask for two comment cards after clearing the screening. Fill it out and drop one there in the box and mail the other to the address on the card.
If your brother isn't comfortable or pressed for time, just ask for two comment cards after clearing the screening. Fill it out and drop one there in the box and mail the other to the address on the card.
#144
FlyerTalk Evangelist
Join Date: Jun 2015
Location: SFO/SJC, BWI
Programs: :rolleyes:, DL DM, Mlife Noir, TR 7*, Marriott Tit, UA Gold
Posts: 12,292
I opted out with no issues in DEN in May. Got the random beep at SFO Terminal 4 yesterday and was already saying opt out when I realized there were no rapiscanners nearby for the Pre line. They did a very perfunctory pat down, not like when I opted out in the International Terminal without pre at the start of my trip.
Security for the DL gates (40-49) has AIT; I've opted out after being randomly selected twice from the Precheck WTMD.
#145
Join Date: Oct 2015
Location: EUG
Programs: BonVoy Au, IHG Au, HH Au, Nexus, Pilot FlyingJ Preferred, *$ Au
Posts: 4,942
#146
Join Date: Dec 2003
Programs: AA Gold, United Silver, SW A-list, Marriott LTT, Hyatt Explorist, Hilton Diamond
Posts: 987
Random selection for TSA PreCheck screening not random?
My husband has been using TSA PreCheck for years - first as a Platinum AA flyer, now with Global Entry. Suddenly he is being chosen for "random" screening almost every time (7 of the last 8 flights). This is not the SSSS screening; this is at the point where he goes through the metal detector and is given the beep. It doesn't seem to be linked to his profile, because he's already passed the checkpoint. I don't think he appears physically to be a threat (average height/weight middle-aged businessman).
It seems mathematically impossible for this to be random. (I get pulled out about 10% of the time). What could be the problem?
It seems mathematically impossible for this to be random. (I get pulled out about 10% of the time). What could be the problem?
#147
Join Date: Nov 2009
Programs: DL PM 1MM
Posts: 3,109
My husband has been using TSA PreCheck for years - first as a Platinum AA flyer, now with Global Entry. Suddenly he is being chosen for "random" screening almost every time (7 of the last 8 flights). This is not the SSSS screening; this is at the point where he goes through the metal detector and is given the beep. It doesn't seem to be linked to his profile, because he's already passed the checkpoint. I don't think he appears physically to be a threat (average height/weight middle-aged businessman).
It seems mathematically impossible for this to be random. (I get pulled out about 10% of the time). What could be the problem?
It seems mathematically impossible for this to be random. (I get pulled out about 10% of the time). What could be the problem?
#148
Join Date: Nov 2013
Location: PHL
Programs: AA - Platinum, HHonors - Diamond, IHG - Plat, Marriott - Gold, National - Executive, NEXUS
Posts: 1,062
For example, flipping a fair coin (exactly 50/50 heads vs. tails) 8 times will result in exactly 7 heads 3.125% of the time. Very far from impossible.
Even more, assuming the probability of being selected at any given trip changes (say the TSA plays with the % selected function from day to day), if we knew the likelihood of selection on any given trip we can calculate the exact probability of being selected 7 times out of 8.
#149
FlyerTalk Evangelist
Join Date: Jun 2015
Location: SFO/SJC, BWI
Programs: :rolleyes:, DL DM, Mlife Noir, TR 7*, Marriott Tit, UA Gold
Posts: 12,292
Is the WTMD sensitivity adjustable, and/or variable by site/equipment? I have a watch with a metal body and band; after being selected randomly twice in a row out of Precheck at SFO (after having never been randomly selected), I started taking the watch off along with emptying my pockets and have not been randomly selected since.
I definitely do not consider this statistically significant, just wondering if it's a possible cause.
I definitely do not consider this statistically significant, just wondering if it's a possible cause.
#150
Join Date: Dec 2003
Programs: AA Gold, United Silver, SW A-list, Marriott LTT, Hyatt Explorist, Hilton Diamond
Posts: 987
Not only is this NOT impossible, but knowing the likelihood of any individual pax being chosen by the random alarm allows the calculation of the precise probability of being selected 7 of 8 times.
For example, flipping a fair coin (exactly 50/50 heads vs. tails) 8 times will result in exactly 7 heads 3.125% of the time. Very far from impossible.
Even more, assuming the probability of being selected at any given trip changes (say the TSA plays with the % selected function from day to day), if we knew the likelihood of selection on any given trip we can calculate the exact probability of being selected 7 times out of 8.
For example, flipping a fair coin (exactly 50/50 heads vs. tails) 8 times will result in exactly 7 heads 3.125% of the time. Very far from impossible.
Even more, assuming the probability of being selected at any given trip changes (say the TSA plays with the % selected function from day to day), if we knew the likelihood of selection on any given trip we can calculate the exact probability of being selected 7 times out of 8.
So I'm still skeptical that it's random.