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Joined 2 years ago
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Cake day: June 18th, 2023

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  • NaibofTabr@infosec.pubtoSelfhosted@lemmy.worldWhat do I actually need?
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    4 days ago

    My main reasons are sailing the high seas

    If this is the goal, then you need to concern yourself with your network first and the computer/server second. You need as much operational control over your home network as you can manage, you need to put this traffic in a separate tunnel from all of your normal network traffic and have it pop up on the public network from a different location. You need to own the modem that links you to your provider’s network, and the router that is the entry/exit point for your network. You need to segregate the thing doing the sailing on its own network segment that doesn’t have direct access to any of your other devices. You can not use the combo modem/router gateway device provided by your ISP. You need to plan your internal network intentionally and understand how, when, and why each device transmits on the network. You should understand your firewall configuration (on your network boundary, not on your PC). You should also get PiHole up and running and start dropping unwanted inbound and outbound traffic.

    OpSec first.










  • This is true but I think it’s worth noting that the most impactful and worst aspects of AirBnB and its ilk are from investors buying old apartment buildings and renting them out like hotels, while dodging all the living standards and financial regulations of actual hotels. If they get away with this it absolutely wrecks the local low-income housing market.

    Private homeowners renting out rooms in their houses, or even renting out their whole house, for vacationers are not really the problem.




  • QR codes are just symbols in a camera readible way and barcodes numbers in a camara readible way.
    A storage medium for 0´s & 1´s like a USB stick or a disc but way less storage.

    Yes, a QR code is a representation of digital data. There are different versions which can represent different amounts of data. The represented data can be anything that you want, as long as the scanning device can interpret that data as something useful.

    They dont add any security,

    An RFID tag holding a blockchain token string also does not add any security, it’s just a different thing holding an alphanumeric value. They could just use RFID tags without the blockchain, the result would be the same.

    But my point is mostly that this is already an entirely solved problem, you don’t need very many bits to store a useful unique ID code, you certainly don’t need a blockchain-token-value amount of bits, and a printed paper tag is cheaper, easier to manufacture, and less environmentally impactful than a microchip.


  • Barcodes and QR codes do not have enough information for unique identification. (Well they could but they start getting bigger and bigger)

    This is not really true. A 16-digit decimal code gives you 10 quadrillion unique numbers. FedEx handled ~3 billion packages in 2024, so at that rate it would take them more than 3 million years to use up the ID space. You don’t need ridiculously long strings (e.g. blockchain tokens) for useful package ID codes.

    If you stored the 16 digits as ASCII characters (7 bits each) it would be all of 112 bits of data. The Micro QR format is more than enough to represent that data, with room to spare for error correction. If you used alphanumeric instead of decimal you’d have 62^16 unique IDs (UC + LC + 0-9), still only 16 ASCII characters (112 bits), and at that point you’re more worried about the sun burning out than you are about running out of package ID codes.

    But the real issue is needing these codes tracked and audited in a public manner. Instead of having a third party company trusted with all the cheese, you use a Blockchain with a public ledger. This doesn’t even require much processing power

    If you want the tracking to be useful, then every time a package passes through a handling station the ID needs to be scanned and the ledger updated indicating the transfer of the package ID from one station to the other. Then every node on the blockchain network needs to update their copy of the ledger with the new transaction data. Never mind mining, if you’re handling millions of packages per day then updating the ledger will create a stupid amount of network traffic and just eat processing power.

    since there’s no incentive to mine as many blocks as possible.

    Without mining, what incentive would there be for anyone besides the actual shipping company to host a blockchain node for this? How would it not still be “a third party company trusted with all the cheese”?

    Also, correcting any errors that get written into the ledger due to some handling failure will be extremely difficult if not impossible:

    Once a transaction is sent and confirmed, it cannot be reversed.