[Koha] Does Koha support barcode scanners and more questions?

[Karthick Babu Sai Sankar Gupta]

 Dear Community Support Team,

I am very new and glad that such software exists and great people
supporting it.

I have following questions

1) Could this software be installed in a webspace and used or should this
be in a standalone (local) computer ?
2) Could any barcode scanners be integrated with this software, to update
whether it is loaned or returned or any specific way to scan the books ?
3) Is it possible to use a mobile camera to scan and update the software
about the books?

Thanks and looking forward to knowing the answers.

regards,
Karthick