I've been researching an idea that I had and I'd like to get some opinions. On my next layout I plan to very intricate control panels that feature something I've never seen discussed before... maybe I missed it!! For turnout control I plan on using a keylock switch. In order to change the direction of a turnout, the operator must insert a key... turning the key moves the points of the turnout. You can buy a variety of keylock switches... for turnouts that service an industry off the main line, you would use a DPDT keylock switch in which the key is only removable in one position. This position would correspond to the turnout being set for the main. This keeps operators from leaving a turnout thrown in the wrong position after their switching is done. For yard work... you would get DPDT keylock switches in which the key could be removed in two positions. Imagine the added realism... you train crew has to pick up the keys for a switching job when they leave the yard... and return them when their done. Surprisingly keylock switches are not that expensive... I've found suitable low-profile switches on the net for less than $6 each... I plan on using them with tortoise switch machines on my next layout... Hopefully, airing this idea won't push the price up too much!!