Amendments.

code/modules/mob/living/carbon/human/human.dm

@@ -1412,6 +1412,7 @@
 	W.forceMove(src)
 	l_hand = W
 	W.equipped(src,slot_l_hand)
+	W.add_fingerprint(src)
 	update_inv_l_hand()
 	return 1
 
@@ -1421,4 +1422,6 @@
 	W.forceMove(src)
 	r_hand = W
 	W.equipped(src,slot_r_hand)
+	W.add_fingerprint(src)
 	update_inv_r_hand()
+	return 1

code/modules/mob/living/carbon/human/inventory.dm

@@ -1,15 +1,7 @@
 /*
 Add fingerprints to items when we put them in our hands.
 This saves us from having to call add_fingerprint() any time something is put in a human's hands programmatically.
-
 */
-/mob/living/carbon/human/put_in_l_hand(var/obj/item/W)
-	. = ..()
-	if(.) W.add_fingerprint(src)
-
-/mob/living/carbon/human/put_in_r_hand(var/obj/item/W)
-	. = ..()
-	if(.) W.add_fingerprint(src)
 
 /mob/living/carbon/human/verb/quick_equip()
 	set name = "quick-equip"