Sliding key

A key assembly comprising:

• a key defining a retaining recess, being slideably received in a key rail, and having a key pin;
• a slider with extensions, defining a pin void receiving the key pin, and being configured to both pivot and translate with respect to the key pin;
• a curved slider rail slideably accommodating the extensions;
• a retainer configured to occupy the retaining recess to hold the key in a retracted position, the retainer including a retaining ball biased by a spring received in a retainer slot intersecting the key rail;
• wherein the retaining recess of the key includes a first retaining recess and a second retaining recess, the first retaining recess is positioned and configured to interface with the retainer to hold the key in a retracted position, the second retaining recess is positioned and configured to interface with the same retainer to hold the key in an extended position;
• wherein the extensions include at least two longitudinally displaced extensions each configured to fully occupy a height dimension of the slider rail, wherein the longitudinal direction is defined to be in a sliding direction of the key within the key rail;
• wherein the pin void is a generally rectangular closed void and the key pin is sized and configured to fully occupy a width dimension of the pin void, the width dimension of the pin void being parallel to the longitudinal direction.