makkarpov

It's a EEPROM code, there is no event.pull, so these functions are equivalent.

You can use this code for passwordless door:

local user = { "user1", "user2", "user3" }
 
local red = component.proxy(component.list("redstone")())
local scr = {}
local gpu = {}
 
for a in component.list("screen") do table.insert(scr, a) end
for a in component.list("gpu") do table.insert(gpu, component.proxy(a)) end
for i = 1, #gpu do gpu[i].bind(scr[i]) end
 
function showState(s)
  for i, g in ipairs(gpu) do
    g.setResolution(40, 20)
    g.fill(1, 1, 40, 20, " ")
    if s then
      g.setForeground(0x00FF00)
      g.set(16, 10, "Access denied")
    else
      g.setForeground(0xFF0000)
      g.set(16, 10, "Access granted")
    end
  end
end
 
function sleep(x)
  local tgt = computer.uptime() + x
  while computer.uptime() < tgt do
    computer.pullSignal(tgt - computer.uptime())
  end
end
 
while true do
  showState(false)
  local type, _, x, y, btn, nick = computer.pullSignal(5)
  if type == "touch" then
    nick = nick:lower()
    for i, v in ipairs(user) do
      if v == nick then
        showState(true)
        red.setOutput(1, 255)
        sleep(2)
        red.setOutput(1, 0)
      end
    end
  end
end 

Modify user list on top of code, flash it to EEPROM, connect some screens, install same amount of GPUs and one redstone block. Program will trigger pulse on top side of it.

You can also read nicknames from a touch event and do not use passwords at all - if passing nicknames to events is enabled in server config, of course. In most cases it is enabled.