So... are you going to post the contents of the bag? Maybe spread out all out on the floor for a money-shot?
this post was submitted on 12 Apr 2025
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I will not be dumping out the entire bag for a money shot but I can list off it's contents for ya.
1x "military" medical kit. Contains all the basics, but most important to me is a legit CAT tourniquet. I added some Neosporin and extra cloth Band-Aids cause why not
1x roll of gorilla tape. It used to be gaffer tape, but in "emergency" situations I place more importance on the strength of the tape and I care less about the residue left behind.
4x "space blankets". Sheets of silver reflective mylar have a lot of uses beyond keeping you warm but they are shocking good at that in a pinch.
1x battery bank with built in charging cables and a solar panel for refilling the bank.
1x waterproof (when closed) electric lighter. I am capable of starting fires without a lighter of any kind but it sure makes it much easier and it can be recharged by the solar pack theoretically an unlimited number of times. It's also on a necklace with a built in whistle and compass.
~30 feet of wax soaked high strength Paracord.
20x 1 foot UV resistant zip ties
1x water key.
1x Leatherman
1x mini ratchet and socket set (5.5mm-15mm) with common driver heads for most common screws
1x small electric screwdriver and tool set for small things (electric screwdriver fails in a usable state)
~20 keys for the most common construction equipment found where I live.
1x umbrella
1x bottle of super glue
1x small tube blue loctite
1x hand pumped 3 stage water filtration system with built in cup and a spare set of filters
1x deck of cards
I feel like am forgetting some things, but that is the bag off the top of my head.
I still have some things I want to add like the GPS for the bag itself, but I think it's mostly where I want it as a daily carried bug out bag.
I think I might start putting together a second bag that has room for bigger things and more quantities, but that one will just stay at home.
Meshtastic node with a GPS radio perhaps. They’re not that expensive and work off the grid. Might need a bit of manual assembly depending on what you get but nothing too difficult.
The problem is conceptual.
There are two types of tracker devices.
AirTags, and similar devices in the Google ecosystem, are short-range Bluetooth beacons. They don't actually have GPS receivers of their own. They rely on the swarm of other Apple / Android phones in the world that have their Bluetooth radios active. One of those phones picks up the beacon, and sends a report up to Apple / Google with its current location and the beacon signal strength. That is how you can find your stuff, because some random person's phone called in a sighting. Because these things are very simple, just a very low power Bluetooth transmitter and nothing else, they can run for a year on a coin cell battery.
The other is an actual GPS tracker. This device has a GPS receiver to determine its own location, and a cellular radio to transmit that location elsewhere, often just by sending a text message with its ID and location to some server. This however is physically larger because you need a battery, GPS antenna, cellular antenna, and a cell phone style radio chip. That all uses a lot more power. Most of the ones designed to last for months have a power brick holding 4-8 D-cell batteries, or a large lithium pack. Obviously that is not some tiny thing you lose in a pocket. Those are usually magnetically attached to the bottom of cars. Or, in the case of fleet telemetry, it will be hardwired into the vehicle. But this sort of thing necessarily requires a subscription fee because it has a cellular radio. That cellular thing needs an account with a carrier.
Look into pettracker on github and buy the hardware on Ali express. Configurable ping frequency and swappable batteries if you order 2.
I use a GL300 tracker paired with a Hologram SIM. Its a bit involved to set up as you need to run a traccar server somewhere and program the tracker for it, but hologram is like $1 a month and the trackers battery life is several months on a charge.
A friend of mine just used an old phone with “find my device” enabled. Is this too big?
I'm a fucking idiot.... This is the obvious answer to my problem lol.
I have several old androids I could toss a cheap SIM into and just pay like a flat fee for a year service.
Thank you for pointing out the most obvious thing that I will be punching myself for not thinking of lol.
I'm like actually disappointed in myself for not having that thought cross my mind once. Haha
The comparably low battery life of phones could become a problem.
I can install a barebones OS and basically disable everything except GPS. Im sure I can get at least a day or 2 out of it. Worst case I just add another solar battery pack and wire it up to that.
If you are going the phone way and care to make the battery last longer, you can also install an app that keeps waiting to receive a keyword by SMS, upon receiving which it turns the GPS on, locates itself and sends the location back by SMS. It has dual benefit of not needing a data pack and making the battery last longer since the GPS or data is not on constantly. On the down side it'll be tough to do live tracking by this approach.
https://www.theonespy.com/features/track-location-with-sms
These are just two links that came up using a basic search to do this. There are multiple listings on f-droid to help you not just get location but control the phone remotely over SMS.
Find My Device (FMD) (Locate and control your device remotely) https://f-droid.org/packages/de.nulide.findmydevice/
Simple sms remote (Control your device by sending text messages) https://f-droid.org/packages/tranquvis.simplesmsremote/
Finder (Remote mobile phone searching via SMS requests.) https://f-droid.org/packages/ru.seva.finder/ Cheers!
So Lineage on an old phone will easily go 5 days without charging.
If I were to disable a bunch of stuff, and force low battery mode (or lowest possible with location sharing still working) it would probably go longer, closer to 8.
You might want to keep WiFi on, it might help you get a location fix with less battery use than just GPS;
The problem with this (I would imagine) is that that thieves these days are probably savvy enough to look for and disable a phone ASAP, paired with phones being big enough that you can't exactly hide one in a bag like you can with something AirTag-sized.
You aren't wrong. The bag I am using does have a secret compartment I added that is pretty hard to find on accident and it can fit a phone. It'll probably make it a little more likely to get spotted but it would take an observant thief and in my experience they are not the smartest folk around.
Active GPS burns through battery pretty quickly. AirTags and the like work because any iPhone that walks within range will share the location anonymously.
I have no problem charging the tracker as long as it can last like 3 days between charges.
Maybe a LoRa node with a GPS module and install Meshtastic on it? It's got a "tracker" mode.
Heltec makes fairly inexpensive ones, but you'll need to supply your own GPS module.
The RAKWirelss Wisblock is modular and basically snaps together; they're a little more expensive, but they're also more power efficient and can be smaller when adding the GPS.
You'd need to be in range, but with a decent antenna (can possibly sew it into the bag), range can be several km.
Hmmmm.... I appreciate the ideas. I don't think I'm technically proficient enough to make my own custom system. I can build computers and repair electronics, but I have never made anything on my own unfortunately.
If you are thinking about a phone with service, I am unsure how much the service will run you. But maybe a pet tracker would be an option?
I have a tractive tracker for one of my dogs. It is $144 / 2 years or $6 /month.
How frequently does it update location?
Every 2-60 minutes, and unlimited live tracking.
Honestly that is tempting.... I could hide it inside the medical pouch pretty well too I think. Hmm.... I have some choices to make.
Google recently opened their ecosystem up to find-my-device tags like this, they're available from providers like Chipolo. Last I heard they weren't very good yet because despite there being tons of Android phones around for them to work with they'd put some restrictions on them that made them ping less frequently.
They're also not GPS tags, they ping nearby Android phones via Bluetooth and the Android phones report their location to Google. But if you're worried about a bag being stolen (as opposed to, for example, being located if you're lost in the wilderness) then that might be enough.
Yeah my only concern is being able to see the location of the bag really. I think I'm just going to to do the old aindoid phone stashed inside with find my phone enabled.
Why not tile or AirTag?
Those trackers rely on pinging off nearby devices. I need it to tell me where the bag is regardless of what's nearby the bag.
Plus they let people know the device is near them after awhile.
Where in the world will that bag be that isn’t near a device?
If you’re concerned about theft, a phone will immediately be reset or discarded, while a tag or two might be missed.
Also the power requirements for anything that uses gps and cellular radio are going to add a lot of heft.
This is a solved problem, you’re adding requirements that aren’t needed.
You're kinda glossing over the part where it notifies the thief after awhile if they have an unknown tile or air tag near them for too long. In the case of stolen bags it is beneficial to me that the thieves are not made aware of any GPS tracking. And most people don't put trackers in their own backpacks so if I am able to hide it in such a fashion that they are unable to notice it right away it makes the odds of me getting my stolen goods returned much higher.
The bag weighs like 40 pounds already so it's not really weight that I am particularly concerned about haha.
Then you probably want something like this, which both silences the airtag and adds years to the battery: https://tryandbyte.com.au/products/elevation-lab-timecapsule-airtag-10-year-battery
You’re fantasizing.
?
Check out https://landairsea.com/. Reasonable price for a solid solution.
Those look cool but charging more for more frequent location updates is incredibly cringe.
Yeah, aren't they just using GPS? Feels cash grabby
I think its the cellular part that increases cost the more it is used. Not the gps. The gps has to get off the device somehow. Could easily be free if you got the updates by physically attaching to the device but would make it very much pointless.
Yeah I can understand a subscription cost for something like this, but charging nearly 4 times as much for frequent location updating feels like intentionally making a product worse so you can try and justify the cost of the "full" service. Idk.