Hi, and welcome to the forums!
There are a number of ways to show turnout position. It's a common use for signals among model railroaders, including most of the signals on my layout.
Atlas snap-switches are powered by what we call "twin-coil" switch machines. They are only powered for short moments, while they are "throwing," so the drive power is of no use in running signals themselves. Instead, you might install a "latching relay" that will operate in parallel with the switch machine, and will give you a set of contacts that can drive signals. Atlas makes something called a "snap relay" that will do just this. You can also find latching relays at electronics places. The snap relay is easier to install, because it has screw terminals and requires no soldering, but it is also a lot more expensive than a simple general-use relay.
There are a few companies that make mechanical switch-stands, models of the devices used to throw turnouts manually on real railroads. Some of these actually rotate with the switch position, and therefore provide an indicator with either lights or flags. I've never tried putting one on an Atlas, though. They are more appropriate for slow-motion machines like the Tortoise, but they may work. This would require a bit of a mechanical installation, nothing very difficult, if the fast-throw of an Atlas machine would work.
If you decide to use latching relays, either the Atlas or another, you should use a Capacitive Discharge circuit to drive your twin-coil machines. It's a power-storage circuit that gives you a bigger "kick" when you push the button, which lets you throw multiple machines at once, or drive twin-coils at greater distances where line-loss in long thin wires is a problem A CD circuit also protects your switch machines in case of a toggle failure which might otherwise burn them up.
It takes an iron man to play with a toy iron horse.
My husband and I are new to model railroading. My husband is disabled and has is limited in what he is able to do - thus my assistance in his new hobby. We are using Atlas remote snap-switches. There is part of his layout that he can not reach because he is in a wheel chair and It is difficult for him to see the position of the turnouts. We are looking for something that will allow him to "see" the position of the turnout from across the layout (5 feet). His first thought was to find a "flag" system that would show the turnout position either by flag position or a red/green light. Is there such a creature?
The layout is a basic layout put together by one novice and his helper (me). We are looking for a solution to this problem that the helper can accomplish without having to undertake major customizing. Any thoughts would be appreciated.
Thanks