The song is in Bb. Here are the chords
intro/Verse:
Bb F Eb Bb
i did my best to notice when the call came down the line
F Gm Eb F
upto the platform of surrender i was brought but i was kind
A# F Eb Gm
and sometimes i get nervouse when i see an open door
Eb F
close your eyes clear your heart cut the chord
[ Tab from: https://www.guitartabs.cc/tabs/k/killers/human_crd_ver_4.html ]
Chorus:
Bb F Gm Bb
are we human or are we denser
F Gm Eb F
my sign is vital my hands are cold
Bb F Gm
and im on my knees looking for the answer
Cm Eb Bb
are we human? or are we denser
bridge:
Eb F F#m (open 5th optional) Gm
will your system be alright when you dream of home tonight
Eb F
ther is no message were recieving let me know is your heart still beating?