bereithalten
to keep ready
To have something available and within reach for a particular purpose or person.
Halten Sie am Eingang bitte Ihre Eintrittskarte und einen Ausweis bereit.
Please have your ticket and an ID ready at the entrance.

to keep ready
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to keep ready
To have something available and within reach for a particular purpose or person.
Halten Sie am Eingang bitte Ihre Eintrittskarte und einen Ausweis bereit.
Please have your ticket and an ID ready at the entrance.

The verb is composed of the adjective 'bereit' (ready, available) and the verb 'halten' (to hold / keep). The literal meaning is therefore 'to keep something ready' or 'to keep available'.
Der Sanitäter hält den Verbandskasten für den Notfall bereit.
The paramedic keeps the first-aid kit ready for emergencies.
'Bereithalten' (to keep ready) is a separable verb. In a main clause, the prefix 'bereit' goes at the end. In subordinate clauses and in the infinitive with 'zu', the verb stays together.
Ich halte die Dokumente für das Treffen bereit.
I keep the documents ready for the meeting.
This form is very often used in official requests or announcements, for example at the airport, on the train, or during inspections.
Alle Passagiere werden gebeten, ihre Bordkarten bereitzuhalten.
All passengers are asked to have their boarding passes ready.
When a person is ready for deployment or action, the verb is used reflexively: 'sich bereithalten' (to stand by / to keep oneself ready). It is often followed by the preposition 'für' (for) to name the purpose or upcoming operation.
Die Rettungskräfte halten sich für einen möglichen Einsatz bereit.
The rescue workers are standing by for a possible deployment.
to store / keep
'aufbewahren' and 'bereithalten' can both mean that something is not given away and can be used later. The difference lies in the purpose. 'aufbewahren' emphasizes that something stays safely or neatly in one place. 'bereithalten' emphasizes that something is immediately available because you need it right away or when required. You can confuse the words when something is lying somewhere for later. If it is only being stored, you are more likely to say 'aufbewahren'. If it should be within easy reach, 'bereithalten' fits better.

Für den Termin hält die Praxis alle Unterlagen am Empfang bereit.
For the appointment, the practice keeps all the documents ready at reception.
Ich bewahre die wichtigen Papiere in einem Ordner im Schrank auf.
I keep the important papers in a folder in the cupboard.