The level of security a padlock can provide depends on the individual padlock. There are high security padlocks on the market. Closed shackle padlocks or padlocks with a thicker shackle are usually harder to cut with bolt cutters. Shrouded and straight shackle padlocks generally offer higher security as well.

Padlocks that are designed with removable cores can be rekeyed.

Determining the right padlock requires evaluating the level of value of what you are trying to protect and where the padlock will be used. If you will be using the padlock outside you will want to get a padlock made with weather resistant coatings.

Padlocks work by passing the shackle through an opening and then pushing the shackle into the hole of the padlock until the locking mechanism engages.