This closed keyway system uses a special, staff-only key with staff staying in full control of window use at all times. The staff-only key can be used across multiple platforms, including anti-barricade doorstops, locksets and vision panels. Making the job easier for staff – with just one key to carry, the risk of stolen or lost keys is reduced. Using a special, staff-only key, limits the potential for service users to block keyways. So it keeps windows operational and reduces maintenance issues and costs.