In the United States, postal services have access to clusters of mailboxes and some common areas where mailman can leave mail and parcels, which can be entryways or some kind of storage rooms in them, for example, so that the owners can pick them up when they get home. These rooms are locked with padlocks made by several local companies. Once a key is inserted and turned in the lock, it can only be retrieved by turning it in the opposite direction to the default position, but even then they manage to forget them in the locks.

A customer from the USA came to us and asked us to combine this padlock with an intercom system we are developing to signal the administrator that the letter carrier came, opened/closed the lock or forgot the key in it. Nobody wants to switch to RFID, of course, or else the employees of the lock manufacturing company will have nothing to eat, so we had to enlarge the intercom vertically in order to build into it a lock whose transom will close a group of contacts on the panel, letting us know that something is going on. On the edge, lmao.

https://imgur.com/a/63GoaTB

In the UK, mailmen are treated very differently - the intercoms have a special button on the intercom which, when pressed, will open the door so that the mailman can enter and drop off the mail without having to carry keys or RFID identifiers. Normally this button is set for some working hours, for example from 9 to 5 and of course anyone can press it and get into the premises.

Many of the installed devices are not properly maintained, even if the manufacturers continue to support them, because you have to pay for maintenance. In addition, not all equipment can be updated remotely over the network or even have a network connection to do so remotely.

Even if your cards are encrypted, it still can't guarantee you protection, because in most cases card readers are connected to controllers (not in the case of all-in-one devices like this lock) via Wiegand protocol, which doesn't provide any data encryption, so the identifier ID is transmitted over two wires in the clear form.

https://www.youtube.com/watch?v=sK5i-N34im8

When choosing 3 years ago, we used the following criteria:

* WYSIWYG editor. Any user must have a minimum effort to write documentation

* Flexible access permissions to various parts of the documentation. Public documentation is open to anonymous users, the internal one is divided into many sections with access for certain groups

* Multilingual support. Not out of the box, but possible with plugins

* Multilingual pdf export. In some markets, some customers prefer to have exported manuals

* The ability to inherit articles. We need to be able to make edits once, instead of duplicating the same articles

* Have a relatively modern appearance. Wiki engines are familiar to many because the whole world uses Wikipedia, but this does not make them more pleasing to the eyes, if I can say so

3 years have passed, I periodically look at alternatives, so far only wiki.js seems like a good solution but it’s not even close yet.

https://imgur.com/gallery/uIOOz1p

Btw, you can easily visit it, because of lots of tours here, it cost about $100-$150 per day. I used this company https://www.chernobyl-tour.com/english/48-one-day-trip-to-th...