This is a case designed for the Raspberry Pi 3 A+, with the intent to be worn on a belt, pocket, or on a shoulder strap. (Computer Bags, Backpacks, etc.) Since it's just a case, you really aren't bound to any singular use for the Pi.
I got the inspiration for this case from seeing a 1980s Walkman. (I've been on a 80s bender; Stranger Things, AHS 1984, etc.)
I could very well see this being used on a university campus, in your home, or other places where you might need a low power computer (besides just your phone) carried on you while you walk around known WIFI areas.
x2 M3 x 16 Screws
x2 M3 x 10 Screws
Raspberry Pi 3 A+: https://www.adafruit.com/product/4027
32GB Micro SD Card: https://www.amazon.com/SanDisk-Ultra-microSDXC-Memory-Adapter/dp/B073JWXGNT?ref_=Oct_BSellerC_3015433011_0&pf_rd_p=c65e95de-7673-54a7-9bfe-1c8b6820a712&pf_rd_s=merchandised-search-6&pf_rd_t=101&pf_rd_i=3015433011&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=2PSHSMMY60R5W7K61T4Z&pf_rd_r=2PSHSMMY60R5W7K61T4Z&pf_rd_p=c65e95de-7673-54a7-9bfe-1c8b6820a712