[Avodah] what kind of kiss

[Goldmeier]

Listening to a dvar Torah about Lavan kissing Yaakov and searching for hidden money/gems got me wondering. What type of kiss was it? Did Yaakov not care that Lavan was searching around in his mouth for gems? 
When I read the parsha, I always assumed it was an innocuous kiss on the cheek. I never realized the discrepeny that caused with rashis pshat of Lavan searching for gems. How did Lavan accomplish this search and did Yaakov not notice or take offense?

Rafi
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