  We investigate the effects of fuzzy measurements on spin entanglement for
identical particles, both fermions and bosons. We first consider an ideal
measurement apparatus and define operators that detect the symmetry of the
spatial and spin part of the density matrix as a function of particle distance.
Then, moving on to realistic devices that can only detect the position of the
particle to within a certain spread, it was surprisingly found that the
entanglement between particles increases with the broadening of detection.
