I remember connecting my laptop to ISDN public phones in Tokyo in the early 2000s to check my email when I was away from my office. Not a particularly fond memory, but it gave me an early taste of the always-connected world we live in now.

The phones apparently still exist [1] but the digital data function is being phased out [2].

[1] https://www.ntt-east.co.jp/en/ptd/contents/mag_public_digita...

[2] https://www.ntt-east.co.jp/ptd/contents/mag_public_digital.h...