The prospects of measuring masses, spin and CP properties within
Supersymmetry and other beyond the Standard Model extensions at the LHC are
reviewed. Emphasis is put on models with missing transverse energy due to
undetected particles, as in Supersymmetry or Universal Extra Dimensions.Comment: 5 pages, 6 pdf figues, contributed to the Proceedings of XXXVIII
International Symposium on Multiparticle Dynamics ISMD 200