WOTC - Security checks in MRT stations

I asked this question in the Wisdom of the Crowd:

Should we introduce airport like checks in MRT stations?

Here are the responses: (82 Votes)

45 % - It will cause inconvenience and delays for the daily travelers.
27 % - It will not be effective. 
18 % - It is better to be prepared for emergencies.
10 % - Some countries already introduced this kind of checks, e.g. China.

See the pie chart at: 
http://www.wisdomofthecrowd.sg/chart.aspx?ID=989