Locking PC after some minutes (powershell script / WIN)

LockPC.ps1

cls

function Wait-For
{
    param( $minutes, $callback )

    $untill = (Get-Date).AddMinutes($minutes)
    Wait-Untill $untill.Hour $untill.Minute $callback
}

function Wait-Untill
{
    param( $wait_Hour, $wait_Minute, $callback )
    
    "Wait untill $($wait_Hour):$($wait_Minute)"
    $now = Get-Date 
    while($now.Hour -ne $wait_Hour -or $now.Minute -ne $wait_Minute)
    {
        $now = Get-Date 
        Sleep -s 1
    }

    & $callback
}

function Lock-PC
{
    rundll32.exe user32.dll,LockWorkStation
}

Wait-For 30 { Lock-PC }

Lock PC every 1.5 hours for 5 min

while( $true )
{
    Wait-For 90 { Lock-PC }
    1..5 | % { Wait-For 1 { Lock-PC } } 
}