▁agents ▁into ▁neutral ▁Spain ▁to ▁prevent ▁it ▁from ▁entering ▁the ▁war ▁on ▁the ▁side ▁of ▁Germany . ▁ ▁He ▁de alt ▁directly ▁with ▁the ▁text ile ▁supp liers , ▁ultimately ▁using ▁more ▁than ▁ 3 0 0 ▁fir ms ▁in ▁and ▁around ▁London , ▁many ▁of ▁them ▁had ▁no ▁idea ▁what ▁they ▁were ▁making ▁or ▁why , ▁to ▁make ▁equipment ▁for ▁secret ▁operations . ▁ ▁Initial ly ▁F ras er - Smith ▁supplied ▁cl othing ▁and ▁standard ▁props ▁( from ▁second - hand ▁sources ) ▁for ▁SO E ▁agents ▁working ▁behind ▁enemy ▁lines , ▁but ▁SO E ▁direct ives ▁and ▁his ▁taste ▁for ▁g ad get ry ▁led ▁him ▁to ▁develop ▁a ▁wide ▁range ▁of ▁sp y ▁and ▁escape ▁devices , ▁including ▁mini ature ▁cam eras ▁inside ▁cig aret te ▁l igh ters , ▁sh aving ▁br ush es ▁containing ▁film , ▁hair br ush es ▁containing ▁a ▁map ▁and ▁saw , ▁pens ▁containing ▁hidden ▁comp ass es , ▁steel ▁sho el aces ▁that ▁double d ▁as ▁gar rott es ▁or ▁g igli ▁saw s , ▁an ▁as best os - lined ▁pipe ▁for ▁carrying ▁secret ▁documents , ▁and ▁much ▁more . ▁ ▁Direct ed ▁to ▁make ▁copies ▁of ▁a ▁new ▁type ▁of ▁Luft wa ffe ▁life ▁jack et , ▁he ▁made ▁discover ies ▁that ▁were ▁subsequently ▁incorpor ated ▁as ▁standard ▁in ▁R AF ▁" M ae ▁West s ", ▁including ▁the ▁use ▁of ▁a ▁com pressed ▁air ▁cyl inder ▁for ▁infl ating ▁the ▁jack et ▁and ▁a ▁p ouch ▁filled ▁with ▁a