I think they can as well as other herps. All of mine listed here that are currently in my care ( other than the females on order which are still a couple weeks out from being ready ) know when it's me. When I get home from work they greet me the same way my dog does. When my room mate gets home my dog greets her but my herps don't. With me they stick their heads and then come to the doors of thier cages to say hi and be taken out. Even the spotted does which I have "trained" to my schedule ( 23:00 to 07:00 ) will come out during our day time wanting to be played with. Which they are known for being nocturnally active and then when I go to bed Spot goes back in the cave. I know he/she probably and most likely comes out when I am sleeping though. King my 4.5 to 5 foot pastel male bci wants nothing to do with my room mate but he will lay in bed ( for as long as I let him which is upto 3 hrs or when ever I am done unwinding from work ) with his body streched out opposite to how I am laying and just rest his head on my chest or stomach depending on what he feels like. Damien, Monte, Jessi, Lestat and Marius all seem to respond in similar ways as King does but they are a little more exploritive then he is at times. None of them like going back "home". Damien will not let anybody but me take him out of his cage. Both him and Monte I took in about 3.5 yrs ago when my cousin moved out of state and as I said if my room mate or one of my friends tries to take him out him has no problem striking at them (none of these people are strangers to him they all had contact with him at my cousins house). That being said I think they not only know and can tell thier owner but are not as mindless as a majority of people like to think.
My Collection:
1.1 Normal BP (Monte, Damien)
0.0.1 Spotted Python (Spot)
2.1 BCI (King, Jessi, Lestat) 0.2 more ordered
1.0 BCC (Surinam Red Tail) (Marius) looking for the right 0.1 for him
1.1 Savannah Monitor ( Grumpy, Snow)
0.1 Northern Australian Blue Tongue Skink (Rosey )