If you ever receive any visitors to your business location, your business should offer WiFi service to your customer. It does not cost much and it adds lots of value to your business offering. If you are retail, customer can use your WiFi to search the price ... that is okay. It is better to help your customer than giving them a feel of being over charged.
コーチ探せる 
bokushi 
Pacific Software Publishing, Inc. 
ウチクラ ケンイチ 
Junya Suzuki 
佐藤淳一（朝活習慣化キャリアコーチ） 
田仲なお美 
木曽町田中屋豆腐 
KUMA 
あさこ 
神戸のおいさん