安裝八達通門禁管理系統

Suzuki

[quote:ddb66971c6="hales"]有一樣野覺得幾奇怪....
大大大多數香港人都default左 SmartCard = 八達通.....
其實八達通只係SmartCard一種..........................=.=
而出入門口係唔會真係拎住張真真正正既"八達通" 開門喎.........

以SmartCard計 以我當時打工 公司有做smartcard system(員工出入記錄)
個smartcard $7k 一張smartcard成本價 $50 如果key holder size既話
成本一張$120

其實smartcard上面係冇咁多information的 只係有一個
identical既card no 同serial no 既每一次read card只會對個serial no 同
card no 再由部reader record左個時間翻check database睇睇呢張卡
係唔係vaild既card 就會俾signal個relay去開門 所有出入時間都會
record在reader內 再由program download去PC...

而用黎book場等等既話 你既個人information亦只會store響電腦
read card亦只係read個serial no同card no 然後由電腦內既database
來核實information..

如果要store埋你個人information入card內既話 果隻應該係Dual Chips
既smartcard了(當年城大首創...呵~) 成本會貴好多. 而正常黎講
張card 99%係要由業主自行俾錢 幾年前SHK既屋苑計 每張$100蚊[/quote]

I have a question how to communicate between the reader and database when the reader was installed on the bus or car or auto selling machine ar?? Radio Frequecy?

saga

[quote:6b1cf0f31e="Suzuki"]

I have a question how to communicate between the reader and database when the reader was installed on the bus or car or auto selling machine ar?? Radio Frequecy?[/quote]

bus car 只係扣錢
D database 係 card reading 跟手去哂個 system 個 databaseD data 然後去銀行度
最後寄月結單俾你 話你知自動增值左幾多次 ...

kwcha333

謝謝分享









文具皇設有專業的跟單人員,
去為你跟進訂單事宜。當收到客人查詢時, 跟單人員會於短時間內跟客人聯絡, 取得
証件 套客人的基本需要, 再而對產品作出介紹