The components used for the validation phase are: a wearable gateway, a wearable vision device, a processing center, a multimedia wall, and an infrastructure that is able to ensure the indoor localization service. The smart gateway is realized through an embedded computer, namely an Odroid-XU [23]. It is a single ARM board measuring just 94x70x18 mm, it has a Samsung Exynos5 Octa Core processor (Cortex-A15) of 1.2 GHz with PowerVR SGX544 graphics card MP3 and it is equipped with 2 GB of DDR3 RAM.