Secure-it case has a combination lock to keep your iPod locked down. Available in black and white for the nano, video and fourth gen models for $40. Strap it anywhere: your desk, belt loop, bicycle, backpack, backpack. It would also work well for permanent mounting in a vehicle where audio theft is always a concern. Available on sale for $35. Available for $99.99 for the iPod Nano, video, fourth gen iPod Nano and Nano Nano cases.”]
Source: https://gizmodo.com/pod-safe-ipod-security-case-191529