NOVELTY - The device (10) has lights e.g. LEDs (16a), and a rechargeable power source (18) e.g. lithium ion polymer battery. A unit e.g. contacts (34), is provided for recharging a power source (20) e.g. solar cell. A processor (22) controls different input and/or output operational modes of the device, and a user input unit e.g. mechanical switch, controls processor function. The lights are housed in diffusers or light pipes. The processor is mounted on a tray (26) or encased in an electronic potting compound e.g. epoxy resin.    USE - Lighting device i.e. personnel indicator light emitting device, such as illuminator e.g. helmet or head mounted illuminator, such as mamba(RTM: Pentium III-based embedded vision processor) illuminator, and mountable torch i.e. python(RTM: general-purpose high-level programming language) mountable torch, communication device and identifier such as personnel identifier i.e. glow-worm(RTM: not defined) identifier, for distinguishing team or side, individual, function, rank and health status, vehicle identifier i.e. lighting(RTM: not defined) identifier, for distinguishing between team or sides function and operational status, aerial identifier i.e. fire fly(RTM: not defined) identifier, and location identifier for distinguishing between landing zone, deployment zone and hazard, for military application to identify personnel e.g. friend or foe, object such as vehicle, building and aerial, and location (all claimed). Can also be used for commercial application such as transport/maintenance, identifying stationary equipment i.e. skip, identifying emergency exit or to light moving object e.g. bicycle.    ADVANTAGE - The device offers flexibility in the field recharge system, environmentally acceptable lighting solution and improved personnel safety. The components of the device are integrated and mounted on or in a tray or encased in an electronic polling compound for insertion into a casing, thus ensuring robustness and miniaturization and reducing the weight. The batteries can be replaced independently of other components, thus enabling recycling. The batteries can be recharged quickly and efficiently.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of a personnel identifier.    Lighting device (10)    Casings (12a, 12b)    Light assembly (16)    LEDs (16a)    Rechargeable power source (18)    Power source (20)    Processor (22)    Tray (26)    Recesses (28, 30)    Contacts (34)