After a stroke, 80% of patients continue to have difficulty using their paretic upper limb in activities of daily living (ADL) despite post-stroke rehabilitation practices that aim to promote the use of the paretic upper limb. It is known that functional recovery depends on actual use (Use it or Loose it), but one-time measurements in the clinic do not allow quantification of the actual use of the paretic upper limb in daily life (in the person's living environment). The investigators hypothesize the feasibility of quantifying functional use of the paretic upper limb by actimetry in clinical routine.