Comment on Binary search
theangryseal@lemmy.world 2 weeks ago
Man, as someone who worked surveillance for years, I can’t believe that anyone would have a hard time with this.
It was so, so, so, so easy to find when something vanished.
Now, did so and so walk in the building? Yeah, kiss my ass. Not happening.
chiliedogg@lemmy.world 2 weeks ago
I worked at a major outdoors retailer with a “gun library” of high-end firearms.
In one of our quarterly steel audits (where we pull all 10,000 guns put hands on them, verify the serials, etc) we discovered a $10,000 rifle was missing.
The thing is, the case it was in obscured the gun itself from the security cameras. It was behind like 6 other guns in a glass case any customer could item and pull the guns out to look at them (guns themselves were trigger-locked of course).
So we had to have the gun library manager sit there and watch 3 month’s of surveillance video of a specific case that was proclaimed opened 20 times an hour in a highly-trafficked area of the store. Because of all the activity, the video had to be watched in real time, and we were open 13 hours a day.
The manager ended up quitting over the boredom combined with stress.
PM_Your_Nudes_Please@lemmy.world 2 weeks ago
Honestly, if your security system didn’t allow you to set motion alerts, that’s a bad system. Basically any modern system will allow you to set motion alerts. You can specify a section (or sections) of the screen that will create a flag in the footage when motion is detected.
My job’s parking garage had a car get broken into, and a musician’s (very expensive) instrument was stolen. We didn’t have a camera pointed directly at the car that was broken into, but we had cameras at every entrance and exit, and on the ramps leading between each floor. Management was expecting to scrub through literal hours of footage. Using some basic motion detection, I set it to flag any time someone came up or went down the specific ramps or stairs that led to the level the car was on. It ended up being like 45 cars.
Then I just did a quick timer, to see how long each person lingered on the floor. Like 40 of the cars came up the ramp from the lower level, then like 30 seconds later went up the next ramp to the next level. So it wasn’t them. Only like five of the cars actually didn’t go to the next level.
And out of those five cars, four were seen on the stairwells leading back down to the ground floor; They had parked on the same level as the incident, and went downstairs.
Only one car lingered on the same level for about 2 minutes, then quickly left again. At the exit, there was a camera on the gate which pointed into the cars. We got crystal clear footage of the driver, (someone who the musician knew) and the instrument case was very obviously sitting in the passenger seat.
The entire search took like 10 minutes total, simply by being able to whittle down when people were coming and going.
chiliedogg@lemmy.world 2 weeks ago
It was a high-tragfic area of a retail store. Motion alert is useless.
theangryseal@lemmy.world 2 weeks ago
Oh god, yeah I’d be out. I would not do that.
Watching surveillance is truly like watching paint dry. Realtime? Yeah, just shoot me.
Hoimo@ani.social 2 weeks ago
I can’t imagine having someone watch 3 months x 13 hours of real-time security footage is worth the 10k, unless the insurance would pay his salary.
But now I know why stores sometimes have their most expensive stuff just sitting there in full view. It’s not just for the customers’ viewing.
nimble@lemmy.blahaj.zone 2 weeks ago
Yeah it’s a sunk cost fallacy. 91 days x 13 hours = 1,183 hours. Even assuming the manager is making $10 an hour they wouldn’t recoup the loss unless they found it early.
Ofc no manager makes $10/hour.
Let’s make some assumptions. just picking a retail place with firearms managers and i see cabela’s listed on glassdoor reporting $53-91k. Let’s go with the low end 53k. Let’s also assume 40 hours per week and the manager is doing no more than 20% unpaid hours, so 2080 salary hours + 208 “good worker” hours = 2288 total hours worked in a year. 53k salary / 2288 hours = $23/hour effective pay rate. That’s even before considering the benefits package
$10,000 item / $23 hours = ~435 hours of real time footage before it is a guaranteed sunk cost. This means finding it within first ~37% of footage. Meanwhile 435 hours would effectively take the manager off the floor for a quarter of the year.
I didn’t need to do math to tell you that this is a task given to someone to make them quit. Manager did something else and this how the company decided to get rid of them.
chiliedogg@lemmy.world 2 weeks ago
It’s not the 10 grand. It’s that a gun was stolen. Someone who walks into a store and steals a gun is the kind of person you want to identify and track down. If we catch them stealing a gun on camera, we can follow them out of the store with the other cameras and grab a plate number from a car.
It happened on another occasion where we saw the gun being stolen in real-time. We were able to track them on camera and call the police with a plate number and have the gun recovered.
We didn’t physically stop them from stealing the gun because that’s the kind of syluspect who will start shooting, and half the customers would pull out their own handguns and “help” by putting more lead into the air.
FilthyHookerSpit@lemmy.world 2 weeks ago
Did they ever find the gun?
chiliedogg@lemmy.world 2 weeks ago
No.