Power supply and WiFi in the conference halls

I have discussed with general-co-chair and decided to provide sockets for 40%
of participants. For example, in ICFP main conference hall, 100 out of
250 participants will be provided with 100 sockets, each with capacity of
100V 1A, taking margin into account (for smaller laptop, or with less CPU workload,
current is less than 1A). We wish we could provide 1A for everyone, but 100A
in the main conference hall is the safe upper-bound (with capacity increase constructions) of the building, not by the power savings due to the earthquake.
We are going to provide WiFi connections in the conference rooms.

(Local arrangements chair)