▁the ▁first ▁time ▁might ▁generate ▁a ▁Q , ▁the ▁next ▁time ▁it ▁might ▁generate ▁a ▁J . ▁Every ▁letter ▁pressed ▁on ▁the ▁keyboard ▁incre ments ▁the ▁rot or ▁position ▁and ▁get ▁a ▁new ▁substitution , ▁implementing ▁a ▁pol yal ph ab etic ▁substitution ▁ci pher . ▁ ▁Depending ▁on ▁the ▁size ▁of ▁the ▁rot or , ▁this ▁may , ▁or ▁may ▁not , ▁be ▁more ▁secure ▁than ▁hand ▁ci ph ers . ▁If ▁the ▁rot or ▁has ▁only ▁ 2 6 ▁positions ▁on ▁it , ▁one ▁for ▁each ▁letter , ▁then ▁all ▁messages ▁will ▁have ▁a ▁( re pe ating ) ▁key ▁ 2 6 ▁letters ▁long . ▁Although ▁the ▁key ▁itself ▁( most ly ▁hidden ▁in ▁the ▁w iring ▁of ▁the ▁rot or ) ▁might ▁not ▁be ▁known , ▁the ▁methods ▁for ▁attack ing ▁these ▁types ▁of ▁ci ph ers ▁don ' t ▁need ▁that ▁information . ▁So ▁while ▁such ▁a ▁single ▁rot or ▁machine ▁is ▁certainly ▁easy ▁to ▁use , ▁it ▁is ▁no ▁more ▁secure ▁than ▁any ▁other ▁partial ▁pol yal ph ab etic ▁ci pher ▁system . ▁ ▁But ▁this ▁is ▁easy ▁to ▁correct . ▁Sim ply ▁stack ▁more ▁rot ors ▁next ▁to ▁each ▁other , ▁and ▁g ear ▁them ▁together . ▁After ▁the ▁first ▁rot or ▁sp ins ▁" all ▁the ▁way ", ▁make ▁the ▁rot or ▁beside ▁it ▁spin ▁one ▁position . ▁Now ▁you ▁would ▁have ▁to ▁type ▁ 2 6 ▁× ▁ 2 6 ▁= ▁ 6 7 6 ▁letters ▁( for ▁the ▁Latin ▁alphabet ) ▁before