If you want a high-tech product expected here, which is certainly not going to help. Do not expect miracles for this price. Here the "minus points": The lock requires a little Pfrimelei to connect to a notebook to be and also the unlocking with the key not misses. So who is on the run, the it is not recommended. The time required for this is but the lower 30 to settle the range of seconds and therefore goes mE perfectly fine. And of course I can safely open the lock with a bolt cutter. Consequently, you should evaluate the function of the castle as: Who thieves simply wishes to impede takeaway, this is the place. More can not afford such a lock. The use of heavy machinery, it certainly has little to counter. But perfectly adequate for short-term backup!